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@@ -5,6 +5,7 @@ import (
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"fmt"
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"log"
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"os"
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+ "sort"
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)
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type tile struct {
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@@ -33,6 +34,19 @@ func readInput(file *os.File) []tile {
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return tiles
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}
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+func abs(a int) int {
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+ if a < 0 {
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+ return -a
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+ }
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+
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+ return a
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+}
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+
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+func part1(tiles []tile) int {
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+ last := len(tiles) - 1
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+ return abs(tiles[last].x-tiles[0].x+1) * abs(tiles[last].y-tiles[0].y+1)
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+}
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+
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func main() {
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if len(os.Args) < 2 {
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log.Fatal("You need to specify a file!")
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@@ -45,5 +59,13 @@ func main() {
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}
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tiles := readInput(file)
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- fmt.Println(tiles)
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+ sort.Slice(tiles, func(i, j int) bool {
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+ if tiles[i].x == tiles[j].x {
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+ return tiles[i].y < tiles[j].y
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+ }
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+
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+ return tiles[i].x < tiles[j].x
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+ })
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+
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+ fmt.Println("Part1:", part1(tiles))
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}
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