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@@ -5,6 +5,7 @@ import (
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"io/ioutil"
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"log"
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"os"
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+ "sort"
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"strconv"
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"strings"
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)
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@@ -137,8 +138,17 @@ func getBasins(input [][]int, lowPoints [][]int) [][]point {
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func part2(input [][]int, lowPoints [][]int) int {
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basins := getBasins(input, lowPoints)
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- fmt.Println(basins)
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- return 0
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+
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+ sort.Slice(basins, func(i, j int) bool {
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+ return len(basins[i]) > len(basins[j])
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+ })
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+
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+ result := 1
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+ for i := 0; i < 3; i++ {
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+ result *= len(basins[i])
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+ }
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+
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+ return result
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}
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func main() {
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@@ -149,5 +159,5 @@ func main() {
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input := readInput(os.Args[1])
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sum, lowPoints := part1(input)
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fmt.Println("Part 1:", sum)
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- part2(input, lowPoints)
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+ fmt.Println("Part 2:", part2(input, lowPoints))
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}
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