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December 22, 2021 03:01
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Broken solution for https://adventofcode.com/2021/day/21, not sure why it does not work
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package main | |
import ( | |
"fmt" | |
"io/ioutil" | |
"os" | |
"strings" | |
"time" | |
) | |
const MaxScore = 21 | |
const MaxSpace = 10 | |
func run(s string) uint64 { | |
// Your code goes here | |
player := 0 | |
universes := [2][MaxScore + 1][MaxSpace + 1]uint64{} | |
// spaces := [2][MaxSpace + 1]uint64{} | |
for _, line := range strings.Split(s, "\n") { | |
if len(line) == 29 { | |
universes[player][0][int(line[28]-'0')] = 1 | |
// spaces[player][int(line[28]-'0')] = 1 | |
} else { | |
universes[player][0][10] = 1 | |
// spaces[player][10] = 1 | |
} | |
player = 1 - player | |
} | |
for { | |
// newspaces := [MaxSpace + 1]uint64{} | |
// for i := 1; i <= MaxSpace; i++ { | |
// newspaces[(i+3-1)%10+1] += 1 * spaces[player][i] | |
// newspaces[(i+4-1)%10+1] += 3 * spaces[player][i] | |
// newspaces[(i+5-1)%10+1] += 6 * spaces[player][i] | |
// newspaces[(i+6-1)%10+1] += 7 * spaces[player][i] | |
// newspaces[(i+7-1)%10+1] += 6 * spaces[player][i] | |
// newspaces[(i+8-1)%10+1] += 3 * spaces[player][i] | |
// newspaces[(i+9-1)%10+1] += 1 * spaces[player][i] | |
// } | |
// spaces[player] = newspaces | |
// for j := 1; j < MaxScore; j++ { | |
// for i := 1; i <= MaxSpace; i++ { | |
// scores[1-player][j][i] *= 27 | |
// } | |
// } | |
for score := 0; score < MaxScore; score++ { | |
fmt.Println(universes[player][score]) | |
spaces := [MaxSpace + 1]uint64{} | |
for space := 1; space <= MaxSpace; space++ { | |
spaces[(space+3-1)%10+1] += 1 * universes[player][score][space] | |
spaces[(space+4-1)%10+1] += 3 * universes[player][score][space] | |
spaces[(space+5-1)%10+1] += 6 * universes[player][score][space] | |
spaces[(space+6-1)%10+1] += 7 * universes[player][score][space] | |
spaces[(space+7-1)%10+1] += 6 * universes[player][score][space] | |
spaces[(space+8-1)%10+1] += 3 * universes[player][score][space] | |
spaces[(space+9-1)%10+1] += 1 * universes[player][score][space] | |
// scores[1-player][j][i] *= 27 | |
} | |
universes[player][score] = spaces | |
fmt.Println(universes[player][score]) | |
fmt.Println() | |
} | |
for space := 1; space <= MaxSpace; space++ { | |
for score := MaxScore - 1; score >= MaxScore-space; score-- { // MaxScore > MaxSpace | |
// fmt.Println(MaxScore, j, i) | |
universes[player][MaxScore][0] += universes[player][score][space] | |
universes[player][MaxScore][space] += universes[player][score][space] | |
} | |
} | |
foundTheSupremeGalaticChampion := true | |
// count := uint64(0) | |
// scores[player][0][0] = 0 | |
for score := MaxScore - 1; score >= 0; score-- { | |
universes[player][score][0] = 0 | |
for space := 1; space <= MaxSpace; space++ { | |
universes[player][score][space] = 0 | |
if score-space < 0 { | |
continue | |
} | |
// fmt.Println(score, space) | |
// scores[player][j][i] += 1 * scores[player][j-i][(i-3+MaxSpace-1)%MaxSpace+1] | |
// scores[player][j][i] += 3 * scores[player][j-i][(i-4+MaxSpace-1)%MaxSpace+1] | |
// scores[player][j][i] += 6 * scores[player][j-i][(i-5+MaxSpace-1)%MaxSpace+1] | |
// scores[player][j][i] += 7 * scores[player][j-i][(i-6+MaxSpace-1)%MaxSpace+1] | |
// scores[player][j][i] += 6 * scores[player][j-i][(i-7+MaxSpace-1)%MaxSpace+1] | |
// scores[player][j][i] += 3 * scores[player][j-i][(i-8+MaxSpace-1)%MaxSpace+1] | |
// scores[player][j][i] += 1 * scores[player][j-i][(i-9+MaxSpace-1)%MaxSpace+1] | |
// scores[player][0][0] += scores[player][j-i][i] | |
universes[player][score][0] += universes[player][score-space][space] | |
universes[player][score][space] += universes[player][score-space][space] | |
// count += scores[player][j-i][i] | |
if universes[player][score][space] != 0 { | |
foundTheSupremeGalaticChampion = false | |
} | |
} | |
// if j-3 < 0 { | |
// continue | |
// } | |
// scores[player][j] += 1 * scores[player][j-3] | |
// foundTheSupremeGalaticChampion = foundTheSupremeGalaticChampion && scores[player][j] == 0 | |
// if j-4 < 0 { | |
// continue | |
// } | |
// scores[player][j] += 3 * scores[player][j-4] | |
// foundTheSupremeGalaticChampion = foundTheSupremeGalaticChampion && scores[player][j] == 0 | |
// if j-5 < 0 { | |
// continue | |
// } | |
// scores[player][j] += 6 * scores[player][j-5] | |
// foundTheSupremeGalaticChampion = foundTheSupremeGalaticChampion && scores[player][j] == 0 | |
// if j-6 < 0 { | |
// continue | |
// } | |
// scores[player][j] += 7 * scores[player][j-6] | |
// foundTheSupremeGalaticChampion = foundTheSupremeGalaticChampion && scores[player][j] == 0 | |
// if j-7 < 0 { | |
// continue | |
// } | |
// scores[player][j] += 6 * scores[player][j-7] | |
// foundTheSupremeGalaticChampion = foundTheSupremeGalaticChampion && scores[player][j] == 0 | |
// if j-8 < 0 { | |
// continue | |
// } | |
// scores[player][j] += 3 * scores[player][j-8] | |
// foundTheSupremeGalaticChampion = foundTheSupremeGalaticChampion && scores[player][j] == 0 | |
// if j-9 < 0 { | |
// continue | |
// } | |
// scores[player][j] += 1 * scores[player][j-9] | |
// foundTheSupremeGalaticChampion = foundTheSupremeGalaticChampion && scores[player][j] == 0 | |
} | |
fmt.Println(player, universes[player]) | |
fmt.Println(1-player, universes[1-player]) | |
// fmt.Println(spaces) | |
if foundTheSupremeGalaticChampion { | |
break | |
} | |
player = 1 - player | |
for score := 0; score < MaxScore; score++ { | |
for space := 1; space <= MaxSpace; space++ { | |
universes[player][score][space] *= 27 | |
} | |
} | |
} | |
fmt.Println(universes[0][MaxScore]) | |
fmt.Println(universes[1][MaxScore]) | |
result := uint64(0) | |
for space := 1; space <= MaxSpace; space++ { | |
result += universes[player][MaxScore][space] | |
} | |
return result | |
} | |
func main() { | |
// Uncomment this line to disable garbage collection | |
// debug.SetGCPercent(-1) | |
var input []byte | |
var err error | |
if len(os.Args) > 1 { | |
// Read input from file for local debugging | |
input, err = ioutil.ReadFile(os.Args[1]) | |
if err != nil { | |
panic(err) | |
} | |
// Remove extra newline | |
input = input[:len(input)-1] | |
} else { | |
// Read input from stdin | |
input, err = ioutil.ReadAll(os.Stdin) | |
if err != nil { | |
panic(err) | |
} | |
} | |
// Start resolution | |
start := time.Now() | |
result := run(string(input)) | |
// Print result | |
fmt.Printf("_duration:%f\n", time.Since(start).Seconds()*1000) | |
fmt.Println(result) | |
} |
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