2023 Working on day 23
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2023/day23/input
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#.#.#.#.#.#.#.#.#######.###.#.#.#.#v#.###.#.###.#.###.#.#####.#.#.###.#.#.#.#.#.#########v#.###.#.#.###.#.#.#.#.#########.###.#############.#
|
||||
#.#.#.#...#...#.........#...#.#.#.>.>.#...#...#.#.#...#...#...#.#.#...#...#.#.#...#...#.>.>.#...#.#.#...#...#...###...#...#...###.......#...#
|
||||
#.#.#.###################.###.#.#######.#####.#.#.#.#####.#.###.#.#.#######.#.###.#.#.#.#####.###.#.#.#############.#.#.###.#####.#####.#.###
|
||||
#.#.#.............#.....#...#.#.#######...#...#.#.#...#...#.#...#.#.......#.#.###.#.#.#.#.....#...#.#.........#.....#...#...#...#.....#...###
|
||||
#.#.#############.#.###.###.#.#.#########.#.###.#.###.#.###.#.###.#######.#.#.###.#.#.#.#.#####.###.#########.#.#########.###.#.#####v#######
|
||||
#.#...........#...#...#.#...#.#.....#.....#.#...#.###.#.###.#.#...#.......#...###.#.#.#.#.#...#.#...#.........#.........#...#.#.#...>.#.....#
|
||||
#.###########.#.#####.#.#.###.#####.#.#####.#.###.###.#.###.#.#.###.#############.#.#.#.#.#.#.#.#.###.#################.###.#.#.#.###v#.###.#
|
||||
#.#.........#...#...#.#.#.#...#.....#.....#.#.....###.#.#...#.#...#.............#.#.#.#.#.#.#...#...#.......#####...#...###.#.#...#...#...#.#
|
||||
#.#.#######.#####.#.#.#.#.#.###.#########.#.#########.#.#.###.###.#############.#.#.#.#.#.#.#######.#######v#####.#.#.#####.#.#####.#####.#.#
|
||||
#.#.#.......#...#.#.#.#.#.#...#.....#.....#.........#.#.#.#...#...#.......#...#.#...#.#.#.#.###.....#...#.>.>.#...#.#.#####...#...#.#...#.#.#
|
||||
#.#.#.#######.#.#.#.#.#.#.###.#####.#.#############.#.#.#.#.###.###.#####.#.#.#.#####.#.#.#.###.#####.#.#.###.#.###.#.#########.#.#.#.#.#.#.#
|
||||
#...#.#...#...#.#.#.#.#...#...#.....#.....#...#.....#.#.#.#...#...#.....#.#.#...###...#.#.#.#...#...#.#.#...#.#...#.#.....#.....#...#.#...#.#
|
||||
#####.#.#.#.###.#.#.#.#####.###.#########.#.#.#.#####.#.#.###.###.#####.#.#.#######.###.#.#.#.###.#.#.#.###.#.###.#.#####.#.#########.#####.#
|
||||
#.....#.#.#.###.#.#.#.....#...#...#.......#.#.#.....#.#.#.#...#...#...#.#.#.......#...#.#.#.#...#.#.#.#.#...#.#...#.#.....#...#.....#.#.....#
|
||||
#.#####.#.#.###.#.#.#####.###.###.#.#######.#.#####.#.#.#.#.###.###.#.#.#.#######.###.#.#.#.###.#.#.#.#.#.###.#.###.#.#######.#.###.#.#.#####
|
||||
#.......#...###...#.......###.....#.........#.......#...#...###.....#...#.........###...#...###...#...#...###...###...#######...###...#.....#
|
||||
###########################################################################################################################################.#
|
||||
139
2023/day23/main.go
Normal file
139
2023/day23/main.go
Normal file
@ -0,0 +1,139 @@
|
||||
package main
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"os"
|
||||
|
||||
h "git.bullercodeworks.com/brian/adventofcode/helpers"
|
||||
)
|
||||
|
||||
func main() {
|
||||
inp := h.StdinToStringSlice()
|
||||
if len(os.Args) == 1 || os.Args[1] != "-p2" {
|
||||
part1(inp)
|
||||
}
|
||||
if len(os.Args) == 1 {
|
||||
fmt.Println()
|
||||
}
|
||||
if len(os.Args) == 1 || os.Args[1] != "-p1" {
|
||||
part2(inp)
|
||||
}
|
||||
}
|
||||
|
||||
var history map[string]int
|
||||
|
||||
func part1(input []string) {
|
||||
history = make(map[string]int)
|
||||
m := h.StringSliceToCoordByteMap(input)
|
||||
start, _ := m.FindFirst('.')
|
||||
start.Y++
|
||||
end, _ := m.FindLast('.')
|
||||
fmt.Println("# Part 1")
|
||||
fmt.Println(len(findPath(&m, start, end, []h.Coordinate{})))
|
||||
}
|
||||
|
||||
func part2(input []string) {
|
||||
history = make(map[string]int)
|
||||
m := h.StringSliceToCoordByteMap(input)
|
||||
start, _ := m.FindFirst('.')
|
||||
start.Y++
|
||||
end, _ := m.FindLast('.')
|
||||
m.ReplaceAll('^', '.')
|
||||
m.ReplaceAll('>', '.')
|
||||
m.ReplaceAll('v', '.')
|
||||
m.ReplaceAll('<', '.')
|
||||
fmt.Println("# Part 2")
|
||||
fmt.Println(len(findPath(&m, start, end, []h.Coordinate{})))
|
||||
}
|
||||
|
||||
func findPath(m *h.CoordByteMap, pos h.Coordinate, end h.Coordinate, path []h.Coordinate) []h.Coordinate {
|
||||
ret := []h.Coordinate{pos}
|
||||
if pos.Equals(end) {
|
||||
//printPath(m, pos, path)
|
||||
//time.Sleep(time.Second / 20)
|
||||
return ret
|
||||
}
|
||||
|
||||
path = append(path, pos)
|
||||
switch m.Get(pos) {
|
||||
case '^':
|
||||
if inPath(pos.North(), path) {
|
||||
return ret
|
||||
} else {
|
||||
return append(ret, findPath(m, pos.North(), end, path)...)
|
||||
}
|
||||
case '>':
|
||||
if inPath(pos.East(), path) {
|
||||
return ret
|
||||
} else {
|
||||
return append(ret, findPath(m, pos.East(), end, path)...)
|
||||
}
|
||||
case 'v':
|
||||
if inPath(pos.South(), path) {
|
||||
return ret
|
||||
} else {
|
||||
return append(ret, findPath(m, pos.South(), end, path)...)
|
||||
}
|
||||
case '<':
|
||||
if inPath(pos.West(), path) {
|
||||
return ret
|
||||
} else {
|
||||
return append(ret, findPath(m, pos.West(), end, path)...)
|
||||
}
|
||||
}
|
||||
|
||||
var longestPath []h.Coordinate
|
||||
longest := h.MIN_INT
|
||||
for _, chk := range []h.Coordinate{pos.North(), pos.East(), pos.South(), pos.West()} {
|
||||
if m.Get(chk) == '#' || inPath(chk, path) || !m.ContainsCoord(chk) {
|
||||
continue
|
||||
}
|
||||
|
||||
var run bool
|
||||
var v int
|
||||
if v, run = history[chk.String()]; run {
|
||||
run = v < len(path)+1
|
||||
}
|
||||
if run {
|
||||
history[chk.String()] = len(path) + 1
|
||||
chkPath := append(ret, findPath(m, chk, end, path)...)
|
||||
if inPath(end, chkPath) && len(chkPath) > longest {
|
||||
longest = len(chkPath)
|
||||
longestPath = chkPath
|
||||
}
|
||||
}
|
||||
}
|
||||
return longestPath
|
||||
}
|
||||
|
||||
func inPath(pos h.Coordinate, path []h.Coordinate) bool {
|
||||
for _, chk := range path {
|
||||
if chk.Equals(pos) {
|
||||
return true
|
||||
}
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
func printPath(m *h.CoordByteMap, pos h.Coordinate, path []h.Coordinate) {
|
||||
limit := (m.BRY - m.TLY) > 30
|
||||
fmt.Print(h.CLEAR_SCREEN)
|
||||
for y := m.TLY; y <= m.BRY; y++ {
|
||||
if limit && h.Abs(pos.Y-y) > 15 {
|
||||
continue
|
||||
}
|
||||
for x := m.TLX; x <= m.BRX; x++ {
|
||||
chk := h.Coordinate{X: x, Y: y}
|
||||
if chk.Equals(pos) {
|
||||
fmt.Print("@")
|
||||
} else {
|
||||
if inPath(chk, path) {
|
||||
fmt.Print("O")
|
||||
} else {
|
||||
fmt.Print(string(m.Get(chk)))
|
||||
}
|
||||
}
|
||||
}
|
||||
fmt.Println()
|
||||
}
|
||||
}
|
||||
23
2023/day23/testinput
Normal file
23
2023/day23/testinput
Normal file
@ -0,0 +1,23 @@
|
||||
#.#####################
|
||||
#.......#########...###
|
||||
#######.#########.#.###
|
||||
###.....#.>.>.###.#.###
|
||||
###v#####.#v#.###.#.###
|
||||
###.>...#.#.#.....#...#
|
||||
###v###.#.#.#########.#
|
||||
###...#.#.#.......#...#
|
||||
#####.#.#.#######.#.###
|
||||
#.....#.#.#.......#...#
|
||||
#.#####.#.#.#########v#
|
||||
#.#...#...#...###...>.#
|
||||
#.#.#v#######v###.###v#
|
||||
#...#.>.#...>.>.#.###.#
|
||||
#####v#.#.###v#.#.###.#
|
||||
#.....#...#...#.#.#...#
|
||||
#.#########.###.#.#.###
|
||||
#...###...#...#...#.###
|
||||
###.###.#.###v#####v###
|
||||
#...#...#.#.>.>.#.>.###
|
||||
#.###.###.#.###.#.#v###
|
||||
#.....###...###...#...#
|
||||
#####################.#
|
||||
@ -86,6 +86,16 @@ func (m *CoordByteMap) Height() int {
|
||||
func (m *CoordByteMap) Width() int {
|
||||
return m.BRX - m.TLX
|
||||
}
|
||||
func (m *CoordByteMap) ReplaceAll(o, n byte) {
|
||||
for y := m.TLY; y <= m.BRY; y++ {
|
||||
for x := m.TLX; x <= m.BRX; x++ {
|
||||
c := Coordinate{X: x, Y: y}
|
||||
if m.Get(c) == o {
|
||||
m.Put(c, n)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (m *CoordByteMap) ToByteSlices() [][]byte {
|
||||
var ret [][]byte
|
||||
@ -167,6 +177,20 @@ func (m *CoordByteMap) FindFirst(b byte) (Coordinate, error) {
|
||||
return Coordinate{}, errors.New("Not Found")
|
||||
}
|
||||
|
||||
// FindLast searches right to left, bottom to top for the last
|
||||
// instance of b
|
||||
func (m *CoordByteMap) FindLast(b byte) (Coordinate, error) {
|
||||
for y := m.BRY; y >= m.TLY; y-- {
|
||||
for x := m.BRX; x >= m.TLX; x-- {
|
||||
c := Coordinate{X: x, Y: y}
|
||||
if m.Get(c) == b {
|
||||
return c, nil
|
||||
}
|
||||
}
|
||||
}
|
||||
return Coordinate{}, errors.New("Not Found")
|
||||
}
|
||||
|
||||
func (m *CoordByteMap) FindAll(b ...byte) []Coordinate {
|
||||
var ret []Coordinate
|
||||
for y := m.TLY; y <= m.BRY; y++ {
|
||||
|
||||
Loading…
Reference in New Issue
Block a user