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main.go
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main.go
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package main
import (
"fmt"
"github.com/jdrst/adventofgo/util"
)
type node struct {
p util.Point
weight, index int
}
func main() {
fmt.Printf("First part: %v\n", partOne(util.ReadFile("input.txt")))
fmt.Printf("Second part: %v\n", partTwo(util.ReadFile("input.txt")))
}
func partOne(file util.File) int {
cavern := file.AsLines().As2DInts("")
start := util.Point{X: 0, Y: 0}
target := util.Point{X: len(cavern) - 1, Y: len(cavern[len(cavern)-1]) - 1}
return astar(cavern, start, target, func(a, b util.Point) int { return 0 })
}
func partOneManhattanDist(file util.File) int {
cavern := file.AsLines().As2DInts("")
start := util.Point{X: 0, Y: 0}
target := util.Point{X: len(cavern) - 1, Y: len(cavern[len(cavern)-1]) - 1}
return astar(cavern, start, target, util.ManhattanDistance)
}
func partTwo(file util.File) int {
cavern := makeCavern(file.AsLines())
start := util.Point{X: 0, Y: 0}
target := util.Point{X: len(cavern) - 1, Y: len(cavern[len(cavern)-1]) - 1}
return astar(cavern, start, target, func(a, b util.Point) int { return 0 })
}
func partTwoManhattanDist(file util.File) int {
cavern := makeCavern(file.AsLines())
start := util.Point{X: 0, Y: 0}
target := util.Point{X: len(cavern) - 1, Y: len(cavern[len(cavern)-1]) - 1}
return astar(cavern, start, target, util.ManhattanDistance)
}
func makeCavern(lines util.Lines) [][]int {
cavern := make([][]int, len(lines)*5)
for i, l := range lines {
cavern[i+len(lines)*0] = make([]int, len(l)*5)
cavern[i+len(lines)*1] = make([]int, len(l)*5)
cavern[i+len(lines)*2] = make([]int, len(l)*5)
cavern[i+len(lines)*3] = make([]int, len(l)*5)
cavern[i+len(lines)*4] = make([]int, len(l)*5)
for j, c := range l.SubSplitWith("").AsInts() {
cavern[i][j] = c
}
}
height := len(lines)
width := len(lines[0])
for multX := 0; multX < 5; multX++ {
for multY := 0; multY < 5; multY++ {
if multX == 0 && multY == 0 {
continue
}
for i := height * multY; i < height*(multY+1); i++ {
for j := width * multX; j < width*(multX+1); j++ {
newX, newY := i, j
if j < width {
newX = i - height
}
if j >= width {
newY = j - width
}
val := cavern[newX][newY] + 1
if val > 9 {
val = 1
}
cavern[i][j] = val
}
}
}
}
return cavern
}