27 lines
548 B
Go
27 lines
548 B
Go
package d1
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import (
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"strconv"
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"strings"
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)
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func P2(scans string) int64 {
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depths := strings.Split(strings.TrimSpace(scans), "\n")
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downs := 0
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for i := 3; i < len(depths); i++ {
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fourth, _ := strconv.Atoi(strings.TrimSpace(depths[i]))
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third, _ := strconv.Atoi(strings.TrimSpace(depths[i-1]))
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second, _ := strconv.Atoi(strings.TrimSpace(depths[i-2]))
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first, _ := strconv.Atoi(strings.TrimSpace(depths[i-3]))
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prev := first + second + third
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next := second + third + fourth
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if next > prev {
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downs++
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}
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}
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return int64(downs)
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}
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