42 lines
852 B
Kotlin
42 lines
852 B
Kotlin
fun isPureWaterString(s: String): Boolean {
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if (s.length % 3 != 0) {
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return false
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}
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var leftCntH = 0
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var rightCntH = 0
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var leftCntO = 0
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var rightCntO = 0
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for ((left, right) in s zip s.reversed()) {
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when (left) {
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'H' -> leftCntH++
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'O' -> leftCntO++
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}
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when (right) {
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'H' -> rightCntH++
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'O' -> rightCntO++
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}
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if (leftCntO > leftCntH) {
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return false
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}
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if (rightCntO > rightCntH) {
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return false
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}
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}
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return leftCntH == leftCntO * 2
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}
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fun main() = with(System.`in`.bufferedReader()) {
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this.readLine()
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val s = this.readLine()
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if (isPureWaterString(s)) {
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println("pure")
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} else {
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println("mix")
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}
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} |