Browse Source

2020 Day 18 Complete

master
Brian Buller 10 months ago
parent
commit
b7a5785976
  1. 2
      2020/day17/main.go
  2. 374
      2020/day18/input
  3. 129
      2020/day18/main.go
  4. 1
      2020/day18/testinput

2
2020/day17/main.go

@ -10,8 +10,6 @@ func main() {
fmt.Println("# Day 17")
fmt.Println()
inp := h.StdinToStringSlice()
//field := h.StringSliceToCoord3dByteMap(inp)
//part1old(field)
fmt.Println("## Part 1:\nAnswer:", run(inp, 3))
fmt.Println("## Part 2:\nAnswer:", run(inp, 4))
}

374
2020/day18/input

@ -0,0 +1,374 @@
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((7 * 4 + 4) * 7 * (5 + 3 * 2 + 4 * 6 * 5) * 2) * 7 * 9 * (5 * 4 + 6 + 2) + 9
2 + 6
3 + 5 * 8 * ((9 * 6 * 3 * 8 + 7) + 8)
7 * 4 * 8
(4 + 9 + 8 * 9 + 7 + 7) * 9
2 * 2 * 2 * (2 * 6 * 3 * 5 + 9) + (2 * 8)
((6 + 8 * 9 * 2 + 9) + 2 + (3 + 2 * 3) + 2 + 8) + 8 * 8 + (4 + (3 * 8) * 9) * 3 + 5
6 + 5 * 8 * 7 + 3 * 3
9 * (6 * 2 * 5 + 5 * (2 + 6 * 7) * 2) * 9 + 7
3 + (6 + 2 * 8 * 3 + (4 * 9)) + 8 + 4 * (5 + 6 + (3 + 9 + 9 + 4 + 3 * 9) * 5 + 2) + 7
5 + 9 * (6 * 9 + (7 + 3 * 9) + 8) * 7
8 * ((2 * 3 + 3 + 6 + 3 * 7) * 3) * 2
5 + 2 + 8 + (2 + 5 * 7 + 9 + 2) * 3
9 * 5 + 3 + (8 + 2)
2 + 9 * (3 * (5 + 7) * 5 + 3) * ((8 * 5 + 4 * 7) + 6) + ((2 * 5) * 2 + 7) + 8
5 + (4 * 9 + 7) + 9
(4 + 8 * 3 + (2 * 5) + 8) + 2 + 2 * 4 * 2 * ((2 * 2) * (2 * 9 + 2) * 6)
5 + ((4 * 2) * 2) * 3
(8 * (3 + 4 * 9 + 9 + 4 * 5) + 3 + 5) + 3 * 4 + 2 * 9
9 + (2 * 2) * 2 + (7 * 3 * 7 + 4) + 5
5 + 6 * (6 + 6 * (4 + 5 * 5 * 3 * 4) * (8 * 9 + 4) * 7 * (8 + 8 + 9 + 3))
3 * (5 + 3 + 7 * 9 + 3 + (3 * 5)) * 3 + (7 * 8 * 5)
(2 * (4 * 5 + 5 + 9 + 9) * 5 + (9 * 6)) * 5 * 5 + 4 * 3 + (5 * 8)
6 + (4 + 2 + 5 * (8 + 5 + 6 * 5 * 6 + 6)) + 5 + 5 + 8
((2 * 4 + 6 * 5) * (5 + 6) + 9 + 9) + 6 * 2 + 3 + 3 * 9
2 + 7 * 2 * 4 * ((2 * 6 + 2 + 2 * 4) * 5) * 7
9 * 3 + (4 * 4 + 4 * 9) * 7 * 2
7 + 5 + 7 * (6 * 4 * 5 + 3 * 9)
(9 * 7) * 3 + 2 * 8
2 * 8 + 4 + 9 * 9
5 + (7 + 4) + 8 + (4 + (4 + 8 * 4 * 2) + 7 + 5) + 9 * (3 * (5 * 8 * 7))
5 + 5 + 9 + (6 * 9 + (9 + 3 * 9 * 3 * 3) * 4) * 9 * 7
(4 * 7 * (9 * 7 + 3) * (8 + 3) * 3 * 9) * 9
3 * (9 + 6 * (3 + 2 * 3) + 7 * 2) * 9 * 9
2 * 9 + (4 + 9 + (3 * 9 * 8 * 5 * 9)) + (8 * 6 + 2 + 7 + 9) * 6 + 8
(8 + 5 * 5 * 5) * 2 * 8 * (4 * 3 * 3) + 3
7 * ((2 * 4) + 3 + (3 + 8 + 9 * 6) + 3 * 9 + 7)
(2 * 7 + 7 * 8) * 3 * (3 * 7 * 9 * 9 * 5 + 2)
(2 * (3 * 5 + 8)) * (8 * 4 + (6 + 2 * 2 + 7) + 3 + 2) * 9 + 3 + 4
9 + (4 * 5 + 2 * 5 * (5 + 4 * 9 + 3)) + 9 + 9 * (4 + 4 * 8 + 4)
8 + (2 * 4) + (8 + 4) * ((6 + 3 + 4 + 4 + 7) * (7 + 6 + 3 + 3 * 3 * 6)) * 6
3 + 6 + (2 * 7 * 2 * 2) + 5
((2 + 7) * 9 + 5) * 5 + ((3 * 9) + (9 + 7 * 6) + (7 + 4 + 7 + 4) + 7) * 3
5 + 2 * 5 * 9 + (6 + 7 + 8 + (2 + 3 + 6 + 6 * 6 * 7) * 8 + 6) * 4
3 + (4 * 2 * 7 + 8) * 5
2 + 9 + 3 + 2 * 3
(5 + (5 + 7 * 5 + 6 + 5) * 3 * 3 * 8) * 4
3 * 9 * 7 + (8 * 8 * (4 + 5) + 4 * 2) * (7 + 8 * 4 + 5 + 2 * 2)
(3 + 6 + (7 + 6 * 2 + 2 * 6 + 5) + 8 + (5 * 7 + 5 + 9)) + 2 + (2 + (2 + 3 * 3 + 2 * 9) * (4 + 9 * 7 + 3) + (5 * 9 + 6 * 3 + 3 + 9) + 8) * 4 * 8
(6 * 8 * 9 + 3 * 4) * 5
6 * 9 * 7 * 2 * (7 + 4 + (5 + 6 + 7 * 4 * 3) * (2 + 7 + 2 * 6) * 8)
9 * (8 + 4 + 6 * (8 * 8 * 4) * (8 * 2 + 4) * 8) * 2
6 * ((2 + 6 * 7 + 5) + 2 * 4 + 6 * 8 * 4) * 2 + 4 + (4 * 2 * 3 + 9 + 3 * 6) + 4
9 * (6 * 5 + (7 * 8) * (2 + 7 * 3 + 3 + 4 * 6)) + 6 * 5 * 6 + 9
9 * (7 + 4 * 6 * 4) + 3 * ((9 * 5 + 4) + (8 + 8 + 6 + 2 + 3 + 7)) + 8 * 9
(6 + 6 + 2 + 3) * (3 * 3 + 3 * (9 + 8 + 4) + (8 * 8 + 2 * 4 * 3))
9 + ((7 * 7 + 9 * 3) * 4 + 4 + 3) + 8 * 6 * (2 * (2 * 9 * 8 * 2 + 3 + 2) + 3 * 3 * (6 * 8 + 3 * 3))
(7 * 4 * 6) * (5 * 5) + 8 * 7 * 5
((5 + 9 + 6 + 5 + 4) + 6 * 9 + 5 + 4) * 2 * 4 * 8 + (7 + 5 * 5 * (8 + 6 + 9 + 7 * 6 + 8) * 3)
9 * ((4 + 6) + 2 + 5)
(5 + 6) * (2 + (9 * 5 + 9) * (9 + 6 * 3 + 4 * 5 * 7) + (6 + 8)) + ((8 + 2 + 5) + 5 + 5 + 8) + (4 + (8 * 3 + 5 + 3 + 8 + 6) * (8 * 3 + 5 * 7 * 8) * 3 + 7 * 7) + 8 + 6
6 + 6 + (4 + (4 * 6 * 3) + 2 + 5 * 4) * 6
4 + (8 * 3 + (6 + 2)) * (6 + 8 + 7 + 2 * 4 * 9) * (5 + (5 * 4 * 3 + 7 + 7 * 8) + 8 * (9 * 5 * 9) + 9) + (4 + 8 + 4 + 8) + (9 * 9 + 8 * 3)
(5 * 2 * 8 * 3) * 5 + 5 + 8 + 9
6 * ((4 * 3 + 2 * 5 * 4 * 6) + 4) + 3 * 6
9 * 5 + (9 + 7)
8 * 2 * 5 * 6 + (6 * 3 * 5 + 4 * (4 * 4 * 4 * 2 + 6) + 4)
6 + (3 + 7 + 8 + 8) * 9 * 6
2 + 5 * ((4 * 2 + 6) * 5 * (6 * 2 + 4 * 8 * 6) + 8) * 8 + 6
4 + 5 * ((4 + 2) + 3 + 5 + (4 + 5 * 3 * 6 + 6) * (5 + 9 + 9 + 6 * 4 + 7) + 8) * 5 * 5
6 * (5 + 4 + (3 + 3 * 3 * 8 * 3) * (2 + 3 * 2 * 2) * 5 + 7) + 2 * 2 * 6 + 9
((3 + 8 * 7 + 3 + 3 + 3) + 3 + 8) * 5
4 + 9 + (9 + 5 * 4 * 8 * 2 + 4)
5 * (4 + 8 + 9 * 5) * ((6 * 9 * 9 + 2 * 5 * 8) * 9 * 2 + (9 * 3 + 4 + 7 + 3 + 2) * (6 * 7 * 5 + 2 * 9 * 2) + (7 * 9 * 4 * 2 * 3)) + 9
7 * 6 + (4 * 4 + (7 * 9 * 6) * (9 + 7) + 5 + 6)
8 + (5 + 4 + 9) + 7 * (5 * 8 + 3 * 5) * 9
8 + (6 + 9 * 8 * 8) + (9 + 7 * 9 + 5 * 7 + 3)
4 + (6 * 6) * 6 + 2 + 4
(9 * 2 + 3) + 4 + 6 + 7 * (2 * 4 + 8 + 5) * 4
5 * 6 + 9 + 7 + 3 * 2
5 * 3 * 5 * ((9 + 8 + 9 + 3) + 6 * (9 * 4 * 2 + 5) * (9 + 9 * 3 + 4))
5 * (3 * (7 + 7 + 8 + 2 * 7 * 9) + 5 + 9) + ((9 * 5 + 4) * 7 * 8 + 3) * 7 + (3 * 8 * (4 + 6 * 2 * 3 + 7 * 8) * 7 * (7 + 4) * 5)
5 * (8 + 3 * 6 * 2) * 9 + 6 * 2 * 5
6 * 4 * 2 + 5 * (9 + 4 * 8 * 3 + 8)
4 * ((6 + 5 + 9 * 9) * 6 * (9 + 7 + 2 * 6 + 2) + 2 + (5 * 4 * 4) + 5)
(8 * (9 * 2 * 4 + 5) * 4 + 9 * 8 * (3 * 6 * 9 + 3 * 8)) * 4 + 5
(5 + (3 * 7 * 8 + 6)) * 4
(4 + 5) + 8
8 * 8 * (2 * (7 * 5 + 7) * 4 + 8) + 2 * 8
5 * 9 * (6 * 4 * 6) * 7 * 9 + 2
2 + ((5 * 4) + 5 + (8 * 9 * 9 + 2 + 9 * 9) + (8 + 4 * 2 + 6) + 8)
(6 * 2) * 4 + 4 * (8 * 5 + 3 + (3 * 5 + 7 + 3 + 5 * 5)) * 2 + 5
3 * 8 + 3 + (6 * (3 * 7 * 4 + 8) * (6 * 2 * 8) + 6 + (5 * 2) * 8) + 7
2 * 8 + 6 * 4 + (5 + (9 * 3 * 4 * 2)) * (4 + 6 * 9 * 8 * 7 + 4)
7 + 6 * (4 * (2 + 8 + 5 * 8 + 3)) + 4 + 2
((3 + 8 + 3 * 6) + (2 + 5 * 7) * 4 + 6 + 7) + (2 + 3 * 6 * (7 + 2 + 7)) * 6 + 2
8 + 4 * 9 * 3 + (5 * 2 * (9 * 3 * 2)) * 6
6 + 7 * (8 + 5 + (2 + 3)) + 5 * 5 + 9
5 * ((6 + 3 * 3 + 6 + 2) + (8 * 9 * 9) + 7)
3 + (7 * (3 + 7 + 7 * 3 * 4) + 5 * 7 * (8 + 4 + 6 * 9)) * 2 * 7
(9 * 6 * (4 * 9 + 6 * 6)) + 8 * (5 + 8 + 5 + 4 * 2 + 3)
3 * (8 + 8 + 7) * (7 * 2 + 4) + (7 + 9)
((9 * 5 + 6 + 9) + 9 + 8) + 3 + 9 * 6 * 8
((8 + 5 * 2) + 4 + 8) + (2 * 5)
(6 + 6 * 8) + 4 * 3 + (8 * 2 + 2 * 3) * (7 * (8 * 4)) * 9
6 * (9 * 5 + 5 * 3) + 8 + ((8 + 3) * (3 + 5 * 7 + 9 * 9 + 2)) + 6 + 2
(7 * 7) * ((3 * 7) + 9 + 4) + (4 * 9 * 8 * 6 * (2 + 4 * 4)) + 5
4 * 3 + 6 * 8 * 5 * (4 * 7 + (5 + 5 + 5 + 3 + 5))
(2 + 6 + (6 * 5 + 4 * 8) * 3 + 2) + 6 + 3
(4 * 5 * 7 * 6 + 6 + (2 * 8 * 6 + 2 + 9)) + 4 + 7
9 * 4 * 5 + 2

129
2020/day18/main.go

@ -0,0 +1,129 @@
package main
import (
"fmt"
"regexp"
"strings"
h "git.bullercodeworks.com/brian/adventofcode/helpers"
)
var rgx = regexp.MustCompile(`\([0-9\*\+ ]*\)`)
const (
LtoR = iota
AthenM
)
func main() {
fmt.Println("# Day 17")
fmt.Println()
inp := h.StdinToStringSlice()
fmt.Println("## Part1\nAnswer:", sum(inp, LtoR))
fmt.Println("## Part2\nAnswer:", sum(inp, AthenM))
}
func sum(inp []string, algo int) int {
var ret int
for k := range inp {
ret = ret + solve(inp[k], algo)
}
return ret
}
func solve(inp string, algo int) int {
var total int
rs := rgx.FindString(inp)
if rs == "" {
// no parentheticals
total = evaluateLine(inp, algo)
} else {
for rs != "" {
repl := evaluateLine(rs[1:len(rs)-1], algo)
inp = strings.Replace(inp, rs, h.Itoa(repl), -1)
rs = rgx.FindString(inp)
}
total = evaluateLine(inp, algo)
}
return total
}
func evaluateLine(inp string, algo int) int {
switch algo {
case LtoR:
return evaluateLineLtoR(inp)
case AthenM:
return evaluateLineAthenM(inp)
}
return 0
}
func evaluateLineLtoR(inp string) int {
var cnt, total int
var op string
// No parentheticals
pts := strings.Split(inp, " ")
for k := range pts {
switch pts[k] {
case "*", "+":
op = pts[k]
default:
if cnt == 0 {
total = h.Atoi(pts[k])
cnt++
} else {
if op == "+" {
total = total + h.Atoi(pts[k])
} else {
total = total * h.Atoi(pts[k])
}
}
}
}
return total
}
func evaluateLineAthenM(inp string) int {
// First solve all addition
inp = evaluateLineAddition(inp)
inp = evaluateLineMultiplication(inp)
return h.Atoi(inp)
}
func evaluateLineAddition(inp string) string {
var newPts []string
for strings.Contains(inp, "+") {
pts := strings.Split(inp, " ")
for k := 0; k < len(pts); k++ {
if pts[k] == "+" {
newPts = pts[:k-1]
newPts = append(newPts, h.Itoa(h.Atoi(pts[k-1])+h.Atoi(pts[k+1])))
newPts = append(newPts, pts[k+2:]...)
inp = strings.Join(newPts, " ")
break
}
}
}
return inp
}
func evaluateLineMultiplication(inp string) string {
var newPts []string
for strings.Contains(inp, "*") {
pts := strings.Split(inp, " ")
for k := 0; k < len(pts); k++ {
if pts[k] == "*" {
newPts = pts[:k-1]
newPts = append(newPts, h.Itoa(h.Atoi(pts[k-1])*h.Atoi(pts[k+1])))
newPts = append(newPts, pts[k+2:]...)
inp = strings.Join(newPts, " ")
break
}
}
}
return inp
}
type Token struct {
SubTokens []Token
}

1
2020/day18/testinput

@ -0,0 +1 @@
((2 + 4 * 9) * (6 + 9 * 8 + 6) + 6) + 2 + 4 * 2
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