2020 Day 19 & 20 Complete
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2020/day19/input
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2020/day19/input
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126: 116 104 | 107 95
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28: 104 | 95
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25: 116 95 | 33 104
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17: 98 104 | 14 95
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69: 120 104 | 86 95
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78: 49 95 | 57 104
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124: 95 36 | 104 74
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61: 104 39 | 95 30
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27: 99 95 | 41 104
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114: 50 104 | 102 95
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76: 83 95 | 116 104
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22: 95 133 | 104 53
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9: 104 71 | 95 63
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72: 65 104 | 90 95
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125: 77 95 | 60 104
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130: 104 44 | 95 69
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106: 33 95
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77: 104 20 | 95 101
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118: 95 104
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99: 95 32 | 104 54
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15: 95 116 | 104 116
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92: 104 132 | 95 23
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120: 66 95 | 37 104
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94: 53 104 | 16 95
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3: 104 107 | 95 10
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40: 95 36 | 104 38
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54: 95 104 | 104 95
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21: 97 104 | 16 95
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12: 104 54 | 95 49
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109: 104 16 | 95 33
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26: 76 95 | 106 104
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105: 49 104 | 133 95
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84: 104 131 | 95 72
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34: 104 91 | 95 112
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23: 126 104 | 15 95
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86: 104 81 | 95 113
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67: 104 107 | 95 49
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20: 95 53 | 104 16
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46: 97 95 | 107 104
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47: 95 33 | 104 53
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134: 104 10 | 95 32
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58: 95 32 | 104 116
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70: 2 95 | 40 104
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60: 95 96 | 104 19
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75: 129 104 | 122 95
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102: 124 104 | 26 95
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123: 104 53 | 95 118
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49: 104 95 | 28 104
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41: 104 43 | 95 16
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43: 95 104 | 104 104
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50: 95 119 | 104 64
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31: 95 7 | 104 130
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29: 62 95 | 79 104
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103: 55 95 | 56 104
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2: 22 95 | 123 104
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91: 85 104 | 13 95
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93: 95 30 | 104 134
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6: 104 33 | 95 57
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96: 53 104 | 97 95
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4: 95 27 | 104 75
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101: 49 104 | 118 95
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90: 56 104 | 100 95
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85: 10 28
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18: 95 32
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81: 104 35 | 95 110
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11: 42 31
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80: 95 108 | 104 110
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10: 104 28 | 95 95
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95: "b"
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16: 95 95 | 104 104
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115: 95 114 | 104 17
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0: 8 11
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33: 104 104
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14: 104 9 | 95 93
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30: 104 43
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133: 28 28
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53: 104 95 | 104 104
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63: 116 95 | 116 104
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68: 74 95 | 25 104
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1: 95 32 | 104 118
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110: 95 33 | 104 107
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111: 87 95 | 80 104
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5: 32 95 | 97 104
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79: 45 104 | 4 95
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88: 95 54 | 104 118
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122: 53 104 | 33 95
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32: 104 104 | 95 28
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42: 29 104 | 115 95
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129: 95 16 | 104 32
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7: 84 104 | 24 95
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112: 128 104 | 78 95
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119: 127 104 | 88 95
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82: 33 104 | 32 95
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45: 59 104 | 89 95
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37: 104 3 | 95 117
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100: 16 95 | 54 104
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59: 95 82 | 104 18
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98: 68 95 | 61 104
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132: 104 129 | 95 6
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83: 95 28 | 104 95
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44: 104 125 | 95 70
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62: 104 73 | 95 111
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107: 95 95 | 95 104
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38: 10 95 | 43 104
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8: 42
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36: 32 104 | 54 95
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39: 95 54
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117: 116 104 | 10 95
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52: 21 95 | 58 104
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56: 97 104 | 49 95
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24: 95 34 | 104 92
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57: 95 95
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87: 104 12 | 95 121
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127: 83 104 | 107 95
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108: 104 33 | 95 16
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97: 104 95 | 95 95
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113: 104 129 | 95 105
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19: 33 95 | 33 104
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73: 95 48 | 104 103
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13: 54 104 | 49 95
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116: 104 95
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64: 46 104 | 13 95
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55: 16 95 | 33 104
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71: 83 95 | 43 104
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65: 47 104 | 110 95
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35: 104 118 | 95 53
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51: 104 94 | 95 1
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128: 95 57 | 104 116
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121: 95 54 | 104 16
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66: 5 95 | 55 104
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131: 51 95 | 52 104
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74: 133 28
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89: 95 5 | 104 82
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104: "a"
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48: 67 104 | 109 95
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bbbaaabbaaaabbabbbaabbab
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babaaabaabaaabbbbbbbbbbaaaababbbbabbabbb
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bbbabbbabaabbababababaaabaaaababaabbbbaa
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aaaabaaaaaaabbbbaababababaabaabbbbbaabbaabbabbaabbaaabab
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baaabbabbbbababbabaaaaba
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abaaaaababaaabbbabbabbababbaaaaaabbbabaaaabbbaabbbaabbabbbaaababbabbbaaa
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bbbabbabbabababbbbbabbabbaaaaabbababaabbbbaabbab
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abababbbbbbbbbbaababbbbbaabaaabaababbbbbbaabbaababaababaaaabaaaaababbabb
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bbbababbbabbaabbaaabbaaaaaabbabaababbaabbbaababa
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bbababbbbbabaaaabbaabbbababbabbbbbbababbaaabaaaa
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abbaaaaaaaaabbbbbabbaaabbbbbababbbabaaabaaaabbbbbbbabbbb
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aaaabbaabaababbbaaababbbaaaaababaababbbaaabaabbaabaabbbbaaaababbbaaabaab
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|
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|
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|
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|
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|
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|
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aabbbbabaabaaaababbaabbbaabaaababaaabbababababaabbbaaaabaaaabaaaabbabbbaabaabbabaababaabbbabaabb
|
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aaabbbabbabbabbaaaabbabaabbbabbaabbaabab
|
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|
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|
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|
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|
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baabaaaaababaabaabaabbbbbbaabaaa
|
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aabbbbbaaabbaabaaababbba
|
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babaaabaaaaaabbabbbaaababbaabbba
|
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aaaabbbababababbabaaabbbbbbbbabaababababaababaaa
|
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ababbbbbbbbabaaaaaababaa
|
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bbaaabbaabbaaabbabbbaaab
|
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bbbbbaaababbbaabbabbaaba
|
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aabbbbabababbabbbaaaaabbabaaaabbbbababbb
|
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baaaaabbaabbbbbabbaabaaa
|
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baababbabbabbbbaaaaaaaaa
|
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bababaaabbaaaabaabbbaabaabbaaaab
|
||||||
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aaaababaaabbbbabaaabaabaabbabbbbbbbbbbab
|
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babaaabbaaaaaabbbbababaaabbbbbbbaabbabaabbababbabbbbaaabbaabbaaa
|
||||||
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baabaaaabbbababbaaababab
|
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|
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aabababbbabaabaabbaabaaa
|
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bbabaaabbababaaaababbaaabaabababbaaabaabbabbbbab
|
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abbbbbabaaabbabaaaababba
|
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|
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|
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|
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|
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|
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abaaabbbbabaababaaaaababbbbaabaa
|
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abaabbabbaaababbaabbbaab
|
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bbbabbbaaababbabbaabaabbbbbabbababaaaabbbaabaaabbbbaabbbbbbaababbabbbbba
|
||||||
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ababbabaabaaaaaabbabbbab
|
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ababbaaaabbaaabbbaabbbaabbbabbbabbbbababbaabaaab
|
||||||
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abbbbabbbbaabbbaabaaaaaabaaaabaaabaabbaaabababbabaaaabbbaaabaaab
|
||||||
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babbabbaaaaaabbabbaaaaababaababbbbabbbabaabbbbbbaaaaaaba
|
||||||
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baabaaababbbbbaabbbaababaaaaaaab
|
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bbbbbbaabaabbabaabaababb
|
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bbbabaabbbbbbabaabbaabbaaabbaabababbbbaababbabaaabaabbba
|
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baabbbabbabaaaababaaaabbabbbaabaabbaaaaaabbaabaaabaabaababababab
|
||||||
|
abbaaabaaababbbababbaaaabbbbaaabbbbbabbbabbbbbaaaaaaaabbbbaababbaaabbabbababbbabababbabb
|
||||||
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aaaaaabbabbaaabbaaaababb
|
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|
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bbbababbaababbaabaaaabbb
|
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|
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aaaabbbaaaabbaaabaaabaab
|
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aaabaabbababbabbabababba
|
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aabbabaaabbababbbaaaaaaabbbbabababbbaabbbbbaaaaa
|
||||||
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abaabbabbabbbabbbbababba
|
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abbaaaaaaababbabaaaabbaabaaaabbaabababab
|
||||||
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aaabbbbbabbabbabbbabaaababaababb
|
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babbbaabbabbbaabaaaaabaabababbbbbababbbbabbbbabb
|
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bbabbabbaaaaabababaabbababbababbaaaabbbbabbbabbbababbbba
|
||||||
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baabaababaabbabaaaaabbbababbbbbbbbabbabbbbbbaabaaaaabaab
|
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|
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baabbaaaaabbbbababaababb
|
||||||
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ababaaabbaabbaaaabbabbbb
|
||||||
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aaaababaaaabbaaaaabbaaaa
|
||||||
|
baabbbaaabaaabbaabbbaaaaaaaaaaaa
|
||||||
|
babababbaaaaaabbbaaababbaaaabbbaabbbbbababbbbbaaaabaabab
|
||||||
|
babbbababbbbaaabaabbbabbbaaababbabbabaabbabaaabbabbaaabababbbabaababbbba
|
||||||
|
bbbabbababaaaaaababaaaabbabbabbaaaabbbba
|
||||||
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bbabbaaaabaaaaaabbabababbbbbbabaabbabbbbaabaaaaabbaaaaab
|
||||||
|
babbbbbbabaaaabbabababab
|
||||||
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baaababbbbbababbbabbabbb
|
||||||
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aaaabbbbabaabbbbabbaabaa
|
||||||
|
bbbabbbabbbbaaabaaaabbaabbbbaaba
|
||||||
|
bbbabbaaaaaabbbaababaababbbabbbb
|
||||||
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bababbaabbabbabbababaaababaabaaaabbaababbaaaaaaaaabbabbb
|
||||||
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bbabaaabbaabaababbaaabab
|
||||||
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aababbbbababaaabaabbbaaa
|
||||||
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abbbabaabaaababbbbabaaabbbbbababababaaaaaaaababb
|
||||||
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aaabbbbbbaabababbbbaabbb
|
||||||
|
aaabbbaabaababbbbbbaabba
|
||||||
|
baaabbbaabaaaaaabbbabbabaabaabbabaababaa
|
||||||
|
abbabbabaaabbbbbabbbbbba
|
||||||
|
bbbabbbabbbabaabbabbaaba
|
||||||
|
bbabbbbaabbaabbabbbabaabababbabbbabbabbb
|
||||||
|
bbbababbaabbbbabbaabbbabbbaaaaabaabaabab
|
||||||
|
aaaaababaabaaabbbbbabbbbbbabaaab
|
||||||
@ -2,7 +2,7 @@ package main
|
|||||||
|
|
||||||
import (
|
import (
|
||||||
"fmt"
|
"fmt"
|
||||||
"os"
|
"regexp"
|
||||||
"strings"
|
"strings"
|
||||||
|
|
||||||
h "git.bullercodeworks.com/brian/adventofcode/helpers"
|
h "git.bullercodeworks.com/brian/adventofcode/helpers"
|
||||||
@ -16,10 +16,6 @@ func main() {
|
|||||||
solve(inp, h.Atoi(part))
|
solve(inp, h.Atoi(part))
|
||||||
}
|
}
|
||||||
|
|
||||||
var loopingTokens []int
|
|
||||||
var allTokens map[int]*Token
|
|
||||||
var totalRules int
|
|
||||||
|
|
||||||
/*
|
/*
|
||||||
8: 42 | 42 8
|
8: 42 | 42 8
|
||||||
11: 42 31 | 42 11 31
|
11: 42 31 | 42 11 31
|
||||||
@ -32,7 +28,6 @@ affect things as they repeat
|
|||||||
*/
|
*/
|
||||||
|
|
||||||
func solve(inp []string, part int) {
|
func solve(inp []string, part int) {
|
||||||
allTokens = make(map[int]*Token)
|
|
||||||
var section int
|
var section int
|
||||||
var rules []string
|
var rules []string
|
||||||
var messages []string
|
var messages []string
|
||||||
@ -48,241 +43,130 @@ func solve(inp []string, part int) {
|
|||||||
messages = append(messages, v)
|
messages = append(messages, v)
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
totalRules = len(rules)
|
if part == 1 {
|
||||||
last := -1
|
solveOne(rules, messages)
|
||||||
for RulesSolved() < totalRules && last != RulesSolved() {
|
|
||||||
last = RulesSolved()
|
|
||||||
for _, v := range rules {
|
|
||||||
fmt.Println("Restarting Rules Parsing")
|
|
||||||
pts := strings.Split(v, ": ")
|
|
||||||
num := h.Atoi(pts[0])
|
|
||||||
if part == 2 {
|
|
||||||
if num == 8 {
|
|
||||||
pts[1] = "42 | 42 8"
|
|
||||||
} else if num == 11 {
|
|
||||||
pts[1] = "42 31 | 42 11 31"
|
|
||||||
}
|
|
||||||
}
|
|
||||||
if _, ok := allTokens[num]; !ok {
|
|
||||||
GenerateToken(num, pts[1])
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
if RulesSolved() < totalRules {
|
|
||||||
fmt.Println("Unable to solve all rules")
|
|
||||||
os.Exit(1)
|
|
||||||
}
|
|
||||||
fmt.Println("Calculating Answer")
|
|
||||||
var matches int
|
|
||||||
for _, v := range messages {
|
|
||||||
if allTokens[0].Matches(v) {
|
|
||||||
matches++
|
|
||||||
}
|
|
||||||
}
|
|
||||||
fmt.Printf("## Part 1\nAnswer: %d\n", matches)
|
|
||||||
}
|
|
||||||
|
|
||||||
// RulesSolved TODO
|
|
||||||
func RulesSolved() int {
|
|
||||||
var ret int
|
|
||||||
for k := range allTokens {
|
|
||||||
if k >= 0 {
|
|
||||||
ret++
|
|
||||||
}
|
|
||||||
}
|
|
||||||
return ret
|
|
||||||
}
|
|
||||||
|
|
||||||
// Token Kinds
|
|
||||||
const (
|
|
||||||
LEAF = iota
|
|
||||||
STICK
|
|
||||||
BRANCH
|
|
||||||
)
|
|
||||||
|
|
||||||
// Token TODO
|
|
||||||
type Token struct {
|
|
||||||
kind int
|
|
||||||
num int
|
|
||||||
value string
|
|
||||||
raw string
|
|
||||||
|
|
||||||
PartNums []int
|
|
||||||
Parts []*Token
|
|
||||||
|
|
||||||
CachedValues []string
|
|
||||||
Loops bool
|
|
||||||
}
|
|
||||||
|
|
||||||
// GenerateToken TODO
|
|
||||||
func GenerateToken(num int, raw string) *Token {
|
|
||||||
if v, ok := allTokens[num]; ok {
|
|
||||||
return v
|
|
||||||
}
|
|
||||||
t := Token{num: num, raw: raw}
|
|
||||||
if raw[0] == '"' {
|
|
||||||
t.value = strings.ReplaceAll(raw, "\"", "")
|
|
||||||
t.kind = LEAF
|
|
||||||
} else {
|
} else {
|
||||||
if !strings.Contains(raw, "|") {
|
solveTwo(rules, messages)
|
||||||
t.kind = STICK
|
|
||||||
var partTokens []*Token
|
|
||||||
pts := strings.Split(raw, " ")
|
|
||||||
for k := range pts {
|
|
||||||
if pts[k] == "|" {
|
|
||||||
continue
|
|
||||||
}
|
}
|
||||||
t.PartNums = append(t.PartNums, h.Atoi(pts[k]))
|
}
|
||||||
|
|
||||||
|
func solveOne(rules, messages []string) {
|
||||||
|
reg := regexp.MustCompile(rulesToRegex(rules))
|
||||||
|
var answer int
|
||||||
|
for _, msg := range messages {
|
||||||
|
if reg.MatchString(msg) {
|
||||||
|
answer++
|
||||||
}
|
}
|
||||||
solved := true
|
}
|
||||||
for k := range t.PartNums {
|
fmt.Printf("## Part 1\nAnswer: %d\n", answer)
|
||||||
if v, ok := allTokens[t.PartNums[k]]; ok || h.IntSliceContains(loopingTokens, t.PartNums[k]) {
|
}
|
||||||
partTokens = append(partTokens, v)
|
|
||||||
} else {
|
func solveTwo(rules, messages []string) {
|
||||||
solved = false
|
// Figure out how many levels deep we have to go to stabilize
|
||||||
|
var answer int
|
||||||
|
var last []int
|
||||||
|
for i := 0; i < 1000; i++ {
|
||||||
|
answer = 0
|
||||||
|
rules = unwrapLoops(rules, i)
|
||||||
|
reg := regexp.MustCompile(rulesToRegex(rules))
|
||||||
|
for _, msg := range messages {
|
||||||
|
if reg.MatchString(msg) {
|
||||||
|
answer++
|
||||||
|
}
|
||||||
|
}
|
||||||
|
if isStable(last, 10) {
|
||||||
break
|
break
|
||||||
}
|
}
|
||||||
|
last = append(last, answer)
|
||||||
}
|
}
|
||||||
if solved {
|
fmt.Printf("## Part 2\nAnswer: %d\n", answer)
|
||||||
t.Parts = partTokens
|
|
||||||
}
|
|
||||||
} else {
|
|
||||||
t.kind = BRANCH
|
|
||||||
pts := strings.Split(raw, " ")
|
|
||||||
for k := range pts {
|
|
||||||
if pts[k] == "|" {
|
|
||||||
continue
|
|
||||||
}
|
|
||||||
n := h.Atoi(pts[k])
|
|
||||||
if n == num {
|
|
||||||
if !h.IntSliceContains(loopingTokens, t.num) {
|
|
||||||
fmt.Println(num, "IS A LOOPING TOKEN")
|
|
||||||
loopingTokens = append(loopingTokens, t.num)
|
|
||||||
t.Loops = true
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
branches := strings.Split(raw, " | ")
|
|
||||||
var partTokens []*Token
|
|
||||||
for k, branch := range branches {
|
|
||||||
branchID := -(num*1000 + k)
|
|
||||||
t.PartNums = append(t.PartNums, branchID)
|
|
||||||
p := GenerateToken(branchID, branch)
|
|
||||||
if p.Solved() {
|
|
||||||
allTokens[branchID] = p
|
|
||||||
partTokens = append(partTokens, p)
|
|
||||||
} else {
|
|
||||||
continue
|
|
||||||
}
|
|
||||||
}
|
|
||||||
solved := true
|
|
||||||
for _, bid := range t.PartNums {
|
|
||||||
if _, ok := allTokens[bid]; !ok {
|
|
||||||
solved = false
|
|
||||||
break
|
|
||||||
}
|
|
||||||
}
|
|
||||||
if solved {
|
|
||||||
t.Parts = partTokens
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
if t.Solved() {
|
|
||||||
allTokens[num] = &t
|
|
||||||
} else {
|
|
||||||
fmt.Println("> Couldn't Solve", num)
|
|
||||||
}
|
|
||||||
return &t
|
|
||||||
}
|
}
|
||||||
|
|
||||||
// Solved TODO
|
func isStable(history []int, confidence int) bool {
|
||||||
func (t *Token) Solved() bool {
|
if len(history) < confidence {
|
||||||
return len(t.Values()) > 0
|
|
||||||
}
|
|
||||||
|
|
||||||
// Values TODO
|
|
||||||
func (t *Token) Values() []string {
|
|
||||||
switch t.kind {
|
|
||||||
case LEAF:
|
|
||||||
return t.LeafValue()
|
|
||||||
case STICK:
|
|
||||||
return t.StickValue()
|
|
||||||
case BRANCH:
|
|
||||||
return t.BranchValue()
|
|
||||||
default:
|
|
||||||
return []string{}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
// LeafValue TODO
|
|
||||||
func (t *Token) LeafValue() []string {
|
|
||||||
return []string{t.value}
|
|
||||||
}
|
|
||||||
|
|
||||||
// StickValue TODO
|
|
||||||
func (t *Token) StickValue() []string {
|
|
||||||
if len(t.Parts) < len(t.PartNums) {
|
|
||||||
return []string{}
|
|
||||||
}
|
|
||||||
if len(t.CachedValues) > 0 {
|
|
||||||
return t.CachedValues
|
|
||||||
}
|
|
||||||
var ret []string
|
|
||||||
for k := range t.Parts {
|
|
||||||
if len(ret) == 0 {
|
|
||||||
ret = t.Parts[k].Values()
|
|
||||||
} else {
|
|
||||||
var newRet []string
|
|
||||||
for rk := range ret {
|
|
||||||
newRet = append(newRet, h.AppendStrings(ret[rk], t.Parts[k].Values())...)
|
|
||||||
}
|
|
||||||
ret = newRet
|
|
||||||
}
|
|
||||||
}
|
|
||||||
t.CachedValues = ret
|
|
||||||
return ret
|
|
||||||
}
|
|
||||||
|
|
||||||
// BranchValue TODO
|
|
||||||
func (t *Token) BranchValue() []string {
|
|
||||||
if len(t.Parts) < len(t.PartNums) {
|
|
||||||
return []string{}
|
|
||||||
}
|
|
||||||
if len(t.CachedValues) > 0 {
|
|
||||||
return t.CachedValues
|
|
||||||
}
|
|
||||||
var ret []string
|
|
||||||
for k := range t.Parts {
|
|
||||||
ret = append(ret, t.Parts[k].Values()...)
|
|
||||||
}
|
|
||||||
t.CachedValues = ret
|
|
||||||
return ret
|
|
||||||
}
|
|
||||||
|
|
||||||
// Matches actually tests a message against this token
|
|
||||||
func (t *Token) Matches(msg string) bool {
|
|
||||||
for _, v := range t.Values() {
|
|
||||||
if msg == v {
|
|
||||||
return true
|
|
||||||
}
|
|
||||||
}
|
|
||||||
return false
|
return false
|
||||||
}
|
|
||||||
|
|
||||||
func (t Token) String() string {
|
|
||||||
return fmt.Sprintf("{num:%d, kind:%s, partNums:%v, value:%v}", t.num, KindToString(t.kind), t.PartNums, t.Values())
|
|
||||||
}
|
|
||||||
|
|
||||||
// KindToString TODO
|
|
||||||
func KindToString(kind int) string {
|
|
||||||
switch kind {
|
|
||||||
case LEAF:
|
|
||||||
return "LEAF"
|
|
||||||
case STICK:
|
|
||||||
return "STICK"
|
|
||||||
case BRANCH:
|
|
||||||
return "BRANCH"
|
|
||||||
default:
|
|
||||||
return "UNKNOWN"
|
|
||||||
}
|
}
|
||||||
|
last := h.MAX_INT
|
||||||
|
for k := len(history) - 1; k > len(history)-confidence; k-- {
|
||||||
|
if last == h.MAX_INT {
|
||||||
|
last = history[k]
|
||||||
|
continue
|
||||||
|
}
|
||||||
|
if history[k] != last {
|
||||||
|
return false
|
||||||
|
}
|
||||||
|
}
|
||||||
|
return true
|
||||||
|
}
|
||||||
|
|
||||||
|
func unwrapLoops(rules []string, depth int) []string {
|
||||||
|
for i := range rules {
|
||||||
|
wrk := rules[i]
|
||||||
|
if strings.HasPrefix(wrk, "8:") {
|
||||||
|
wrk = "8: 42 +"
|
||||||
|
} else if strings.HasPrefix(wrk, "11:") {
|
||||||
|
rule := "42 31"
|
||||||
|
for k := 2; k < depth; k++ {
|
||||||
|
rule += " | "
|
||||||
|
for j := 0; j < k; j++ {
|
||||||
|
rule += " 42 "
|
||||||
|
}
|
||||||
|
for j := 0; j < k; j++ {
|
||||||
|
rule += " 31 "
|
||||||
|
}
|
||||||
|
}
|
||||||
|
wrk = "11: " + rule
|
||||||
|
}
|
||||||
|
rules[i] = wrk
|
||||||
|
}
|
||||||
|
return rules
|
||||||
|
}
|
||||||
|
|
||||||
|
func rulesToRegex(rules []string) string {
|
||||||
|
cache := make(map[int]string)
|
||||||
|
for {
|
||||||
|
if _, ok := cache[0]; ok {
|
||||||
|
// We've cached 0, so we're all done
|
||||||
|
break
|
||||||
|
}
|
||||||
|
loop:
|
||||||
|
for _, rule := range rules {
|
||||||
|
tokens := strings.Fields(rule)
|
||||||
|
var num int
|
||||||
|
fmt.Sscanf(tokens[0], "%d:", &num)
|
||||||
|
if _, ok := cache[num]; ok {
|
||||||
|
continue
|
||||||
|
}
|
||||||
|
tokens = tokens[1:]
|
||||||
|
// A 'leaf'
|
||||||
|
if len(tokens) == 1 && tokens[0][0] == '"' {
|
||||||
|
cache[num] = string(tokens[0][1])
|
||||||
|
continue
|
||||||
|
}
|
||||||
|
// All other rules
|
||||||
|
ruleReg := "(?:"
|
||||||
|
for _, tkn := range tokens {
|
||||||
|
c := tkn[0]
|
||||||
|
switch {
|
||||||
|
case '0' <= c && c <= '9':
|
||||||
|
tknN := h.Atoi(tkn)
|
||||||
|
subRuleReg, ok := cache[tknN]
|
||||||
|
if !ok {
|
||||||
|
continue loop
|
||||||
|
}
|
||||||
|
ruleReg += subRuleReg
|
||||||
|
case c == '|':
|
||||||
|
ruleReg += "|"
|
||||||
|
case c == '+':
|
||||||
|
ruleReg += "+"
|
||||||
|
default:
|
||||||
|
panic("Error building RegEx:" + tkn)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
ruleReg += ")"
|
||||||
|
cache[num] = ruleReg
|
||||||
|
}
|
||||||
|
}
|
||||||
|
// We should be done now, we just want an exact match on rule 0
|
||||||
|
return "^" + cache[0] + "$"
|
||||||
}
|
}
|
||||||
|
|||||||
47
2020/day19/testinput
Normal file
47
2020/day19/testinput
Normal file
@ -0,0 +1,47 @@
|
|||||||
|
42: 9 14 | 10 1
|
||||||
|
9: 14 27 | 1 26
|
||||||
|
10: 23 14 | 28 1
|
||||||
|
1: "a"
|
||||||
|
11: 42 31
|
||||||
|
5: 1 14 | 15 1
|
||||||
|
19: 14 1 | 14 14
|
||||||
|
12: 24 14 | 19 1
|
||||||
|
16: 15 1 | 14 14
|
||||||
|
31: 14 17 | 1 13
|
||||||
|
6: 14 14 | 1 14
|
||||||
|
2: 1 24 | 14 4
|
||||||
|
0: 8 11
|
||||||
|
13: 14 3 | 1 12
|
||||||
|
15: 1 | 14
|
||||||
|
17: 14 2 | 1 7
|
||||||
|
23: 25 1 | 22 14
|
||||||
|
28: 16 1
|
||||||
|
4: 1 1
|
||||||
|
20: 14 14 | 1 15
|
||||||
|
3: 5 14 | 16 1
|
||||||
|
27: 1 6 | 14 18
|
||||||
|
14: "b"
|
||||||
|
21: 14 1 | 1 14
|
||||||
|
25: 1 1 | 1 14
|
||||||
|
22: 14 14
|
||||||
|
8: 42
|
||||||
|
26: 14 22 | 1 20
|
||||||
|
18: 15 15
|
||||||
|
7: 14 5 | 1 21
|
||||||
|
24: 14 1
|
||||||
|
|
||||||
|
abbbbbabbbaaaababbaabbbbabababbbabbbbbbabaaaa
|
||||||
|
bbabbbbaabaabba
|
||||||
|
babbbbaabbbbbabbbbbbaabaaabaaa
|
||||||
|
aaabbbbbbaaaabaababaabababbabaaabbababababaaa
|
||||||
|
bbbbbbbaaaabbbbaaabbabaaa
|
||||||
|
bbbababbbbaaaaaaaabbababaaababaabab
|
||||||
|
ababaaaaaabaaab
|
||||||
|
ababaaaaabbbaba
|
||||||
|
baabbaaaabbaaaababbaababb
|
||||||
|
abbbbabbbbaaaababbbbbbaaaababb
|
||||||
|
aaaaabbaabaaaaababaa
|
||||||
|
aaaabbaaaabbaaa
|
||||||
|
aaaabbaabbaaaaaaabbbabbbaaabbaabaaa
|
||||||
|
babaaabbbaaabaababbaabababaaab
|
||||||
|
aabbbbbaabbbaaaaaabbbbbababaaaaabbaaabba
|
||||||
1728
2020/day20/input
Normal file
1728
2020/day20/input
Normal file
File diff suppressed because it is too large
Load Diff
@ -26,7 +26,9 @@ func init() {
|
|||||||
}
|
}
|
||||||
for y := range monster {
|
for y := range monster {
|
||||||
for x := range monster[y] {
|
for x := range monster[y] {
|
||||||
SeaMonster[h.Coordinate{X: x, Y: y}] = monster[y][x] == '#'
|
if monster[y][x] == '#' {
|
||||||
|
SeaMonster[h.Coordinate{X: x, Y: y}] = true
|
||||||
|
}
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
@ -58,12 +60,8 @@ func solve(inp []string, part int) {
|
|||||||
for x := range image[y] {
|
for x := range image[y] {
|
||||||
if image[y][x] {
|
if image[y][x] {
|
||||||
waves++
|
waves++
|
||||||
fmt.Print("#")
|
|
||||||
} else {
|
|
||||||
fmt.Print(" ")
|
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
fmt.Println()
|
|
||||||
}
|
}
|
||||||
fmt.Println("## Part2\nAnswer:", waves)
|
fmt.Println("## Part2\nAnswer:", waves)
|
||||||
}
|
}
|
||||||
@ -200,11 +198,6 @@ func buildMapFromTiles(tiles map[int]*Tile) [][]bool {
|
|||||||
func monsterSlayer(inp [][]bool) [][]bool {
|
func monsterSlayer(inp [][]bool) [][]bool {
|
||||||
var found bool
|
var found bool
|
||||||
for r := 0; r < 8; r++ {
|
for r := 0; r < 8; r++ {
|
||||||
if r == 6 {
|
|
||||||
// This is the correct orientation
|
|
||||||
fmt.Println("Rotation:", r)
|
|
||||||
PrintMap(inp)
|
|
||||||
}
|
|
||||||
for y := range inp {
|
for y := range inp {
|
||||||
for x := range inp[y] {
|
for x := range inp[y] {
|
||||||
match := true
|
match := true
|
||||||
@ -232,7 +225,6 @@ func monsterSlayer(inp [][]bool) [][]bool {
|
|||||||
}
|
}
|
||||||
}
|
}
|
||||||
if found {
|
if found {
|
||||||
fmt.Println("Found, breaking")
|
|
||||||
break
|
break
|
||||||
}
|
}
|
||||||
if r&1 == 0 {
|
if r&1 == 0 {
|
||||||
@ -284,3 +276,39 @@ func PrintMap(inp [][]bool) {
|
|||||||
fmt.Println()
|
fmt.Println()
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
|
func PrintCoordMap(m map[h.Coordinate]bool) {
|
||||||
|
minX := h.MAX_INT
|
||||||
|
maxX := h.MIN_INT
|
||||||
|
minY := h.MAX_INT
|
||||||
|
maxY := h.MIN_INT
|
||||||
|
|
||||||
|
for k := range m {
|
||||||
|
if k.X < minX {
|
||||||
|
minX = k.X
|
||||||
|
}
|
||||||
|
if k.X > maxX {
|
||||||
|
maxX = k.X
|
||||||
|
}
|
||||||
|
if k.Y < minY {
|
||||||
|
minY = k.Y
|
||||||
|
}
|
||||||
|
if k.Y > maxY {
|
||||||
|
maxY = k.Y
|
||||||
|
}
|
||||||
|
}
|
||||||
|
for y := minY; y <= maxY; y++ {
|
||||||
|
for x := minX; x <= maxX; x++ {
|
||||||
|
if v, ok := m[h.Coordinate{X: x, Y: y}]; ok {
|
||||||
|
if v {
|
||||||
|
fmt.Print("#")
|
||||||
|
} else {
|
||||||
|
fmt.Print(".")
|
||||||
|
}
|
||||||
|
} else {
|
||||||
|
fmt.Print(".")
|
||||||
|
}
|
||||||
|
}
|
||||||
|
fmt.Println()
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|||||||
107
2020/day20/testinput
Normal file
107
2020/day20/testinput
Normal file
@ -0,0 +1,107 @@
|
|||||||
|
Tile 2311:
|
||||||
|
..##.#..#.
|
||||||
|
##..#.....
|
||||||
|
#...##..#.
|
||||||
|
####.#...#
|
||||||
|
##.##.###.
|
||||||
|
##...#.###
|
||||||
|
.#.#.#..##
|
||||||
|
..#....#..
|
||||||
|
###...#.#.
|
||||||
|
..###..###
|
||||||
|
|
||||||
|
Tile 1951:
|
||||||
|
#.##...##.
|
||||||
|
#.####...#
|
||||||
|
.....#..##
|
||||||
|
#...######
|
||||||
|
.##.#....#
|
||||||
|
.###.#####
|
||||||
|
###.##.##.
|
||||||
|
.###....#.
|
||||||
|
..#.#..#.#
|
||||||
|
#...##.#..
|
||||||
|
|
||||||
|
Tile 1171:
|
||||||
|
####...##.
|
||||||
|
#..##.#..#
|
||||||
|
##.#..#.#.
|
||||||
|
.###.####.
|
||||||
|
..###.####
|
||||||
|
.##....##.
|
||||||
|
.#...####.
|
||||||
|
#.##.####.
|
||||||
|
####..#...
|
||||||
|
.....##...
|
||||||
|
|
||||||
|
Tile 1427:
|
||||||
|
###.##.#..
|
||||||
|
.#..#.##..
|
||||||
|
.#.##.#..#
|
||||||
|
#.#.#.##.#
|
||||||
|
....#...##
|
||||||
|
...##..##.
|
||||||
|
...#.#####
|
||||||
|
.#.####.#.
|
||||||
|
..#..###.#
|
||||||
|
..##.#..#.
|
||||||
|
|
||||||
|
Tile 1489:
|
||||||
|
##.#.#....
|
||||||
|
..##...#..
|
||||||
|
.##..##...
|
||||||
|
..#...#...
|
||||||
|
#####...#.
|
||||||
|
#..#.#.#.#
|
||||||
|
...#.#.#..
|
||||||
|
##.#...##.
|
||||||
|
..##.##.##
|
||||||
|
###.##.#..
|
||||||
|
|
||||||
|
Tile 2473:
|
||||||
|
#....####.
|
||||||
|
#..#.##...
|
||||||
|
#.##..#...
|
||||||
|
######.#.#
|
||||||
|
.#...#.#.#
|
||||||
|
.#########
|
||||||
|
.###.#..#.
|
||||||
|
########.#
|
||||||
|
##...##.#.
|
||||||
|
..###.#.#.
|
||||||
|
|
||||||
|
Tile 2971:
|
||||||
|
..#.#....#
|
||||||
|
#...###...
|
||||||
|
#.#.###...
|
||||||
|
##.##..#..
|
||||||
|
.#####..##
|
||||||
|
.#..####.#
|
||||||
|
#..#.#..#.
|
||||||
|
..####.###
|
||||||
|
..#.#.###.
|
||||||
|
...#.#.#.#
|
||||||
|
|
||||||
|
Tile 2729:
|
||||||
|
...#.#.#.#
|
||||||
|
####.#....
|
||||||
|
..#.#.....
|
||||||
|
....#..#.#
|
||||||
|
.##..##.#.
|
||||||
|
.#.####...
|
||||||
|
####.#.#..
|
||||||
|
##.####...
|
||||||
|
##..#.##..
|
||||||
|
#.##...##.
|
||||||
|
|
||||||
|
Tile 3079:
|
||||||
|
#.#.#####.
|
||||||
|
.#..######
|
||||||
|
..#.......
|
||||||
|
######....
|
||||||
|
####.#..#.
|
||||||
|
.#...#.##.
|
||||||
|
#.#####.##
|
||||||
|
..#.###...
|
||||||
|
..#.......
|
||||||
|
..#.###...
|
||||||
@ -14,6 +14,10 @@ func NewCoordinate(x, y int) *Coordinate {
|
|||||||
return &Coordinate{x, y}
|
return &Coordinate{x, y}
|
||||||
}
|
}
|
||||||
|
|
||||||
|
func (c Coordinate) Relative(t Coordinate) Coordinate {
|
||||||
|
return Coordinate{X: c.X + t.X, Y: c.Y + t.Y}
|
||||||
|
}
|
||||||
|
|
||||||
func (c *Coordinate) North() Coordinate {
|
func (c *Coordinate) North() Coordinate {
|
||||||
return Coordinate{X: c.X, Y: c.Y - 1}
|
return Coordinate{X: c.X, Y: c.Y - 1}
|
||||||
}
|
}
|
||||||
|
|||||||
@ -263,6 +263,25 @@ func StringSliceContains(h []string, n string) bool {
|
|||||||
return false
|
return false
|
||||||
}
|
}
|
||||||
|
|
||||||
|
// IntSliceContains takes an int slice and an int and return true
|
||||||
|
// if the int is in the slice
|
||||||
|
func IntSliceContains(h []int, n int) bool {
|
||||||
|
for _, v := range h {
|
||||||
|
if v == n {
|
||||||
|
return true
|
||||||
|
}
|
||||||
|
}
|
||||||
|
return false
|
||||||
|
}
|
||||||
|
|
||||||
|
// AppendString returns a slice of strings that are base+group[...]
|
||||||
|
func AppendStrings(base string, group []string) []string {
|
||||||
|
for k, v := range group {
|
||||||
|
group[k] = base + v
|
||||||
|
}
|
||||||
|
return group
|
||||||
|
}
|
||||||
|
|
||||||
// IsPrime takes a number and return true if that number is prime
|
// IsPrime takes a number and return true if that number is prime
|
||||||
func IsPrime(value int) bool {
|
func IsPrime(value int) bool {
|
||||||
for i := 2; i <= int(math.Floor(float64(value)/2)); i++ {
|
for i := 2; i <= int(math.Floor(float64(value)/2)); i++ {
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user