結果

問題 No.1605 Matrix Shape
ユーザー yakamotoyakamoto
提出日時 2021-07-16 22:04:00
言語 Kotlin
(1.9.23)
結果
WA  
実行時間 -
コード長 3,386 bytes
コンパイル時間 17,340 ms
コンパイル使用メモリ 439,060 KB
実行使用メモリ 60,928 KB
最終ジャッジ日時 2023-09-20 14:01:19
合計ジャッジ時間 37,215 ms
ジャッジサーバーID
（参考情報） 		judge15 / judge12
このコードへのチャレンジ
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テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 364 ms
55,916 KB
testcase_01 AC 330 ms
55,724 KB
testcase_02 AC 344 ms
55,600 KB
testcase_03 AC 331 ms
55,756 KB
testcase_04 WA -
testcase_05 AC 333 ms
55,856 KB
testcase_06 AC 333 ms
57,604 KB
testcase_07 AC 344 ms
55,716 KB
testcase_08 AC 333 ms
56,028 KB
testcase_09 AC 361 ms
55,920 KB
testcase_10 AC 361 ms
55,728 KB
testcase_11 AC 343 ms
55,820 KB
testcase_12 AC 331 ms
55,648 KB
testcase_13 AC 366 ms
55,740 KB
testcase_14 AC 363 ms
55,636 KB
testcase_15 AC 347 ms
55,868 KB
testcase_16 AC 338 ms
55,752 KB
testcase_17 AC 339 ms
55,676 KB
testcase_18 AC 337 ms
55,708 KB
testcase_19 AC 570 ms
60,376 KB
testcase_20 AC 631 ms
60,256 KB
testcase_21 AC 680 ms
60,324 KB
testcase_22 WA -
testcase_23 AC 572 ms
60,648 KB
testcase_24 AC 612 ms
60,372 KB
testcase_25 AC 592 ms
60,380 KB
testcase_26 AC 598 ms
60,220 KB
testcase_27 AC 658 ms
60,336 KB
testcase_28 WA -
testcase_29 AC 652 ms
60,540 KB
testcase_30 AC 639 ms
60,860 KB
testcase_31 AC 677 ms
60,392 KB
testcase_32 AC 638 ms
60,728 KB
testcase_33 WA -
testcase_34 AC 622 ms
60,928 KB
testcase_35 AC 551 ms
60,280 KB
testcase_36 AC 588 ms
60,228 KB
権限があれば一括ダウンロードができます
コンパイルメッセージ
Main.kt:133:11: warning: expected performance impact from inlining is insignificant. Inlining works best for functions with parameters of functional types
  private inline fun debug(a: LongArray) {
          ^
Main.kt:137:11: warning: expected performance impact from inlining is insignificant. Inlining works best for functions with parameters of functional types
  private inline fun debug(a: IntArray) {
          ^
Main.kt:141:11: warning: expected performance impact from inlining is insignificant. Inlining works best for functions with parameters of functional types
  private inline fun debug(a: BooleanArray) {
          ^
Main.kt:145:11: warning: expected performance impact from inlining is insignificant. Inlining works best for functions with parameters of functional types
  private inline fun toString(a: BooleanArray) = run{a.map { if (it) 1 else 0 }.joinToString("")}
          ^
Main.kt:147:11: warning: expected performance impact from inlining is insignificant. Inlining works best for functions with parameters of functional types
  private inline fun debugDim(A: Array<LongArray>) {
          ^
Main.kt:154:11: warning: expected performance impact from inlining is insignificant. Inlining works best for functions with parameters of functional types
  private inline fun debugDim(A: Array<IntArray>) {
          ^
Main.kt:161:11: warning: expected performance impact from inlining is insignificant. Inlining works best for functions with parameters of functional types
  private inline fun debugDim(A: Array<BooleanArray>) {
          ^
Main.kt:178:11: warning: expected performance impact from inlining is insignificant. Inlining works best for functions with parameters of functional types
  private inline fun assert(b: Boolean) = run{if (!b) throw AssertionError()}
          ^

ソースコード

diff # 

import java.io.BufferedReader
import java.io.InputStream
import java.io.InputStreamReader
import java.lang.AssertionError
import java.util.*
import kotlin.math.abs
import kotlin.math.max
import kotlin.math.min

val MOD = 1_000_000_007

class Solver(stream: InputStream, private val out: java.io.PrintWriter) {
  private val reader = BufferedReader(InputStreamReader(stream), 32768)

  fun solve() {
    val N = ni()
    val MAX = 2e5.toInt()
    val degreeIn = IntArray(MAX)
    val degreeOut = IntArray(MAX)
    for (i in 0 until N) {
      val (v, u) = na(2, -1)
      degreeIn[v]++
      degreeOut[u]++
    }

    val diff = (0 until MAX).map{ degreeIn[it] - degreeOut[it] }

    fun isSemi() = run {
      diff.count { it == 1 } == 1 &&
          diff.count { it == -1 } == 1 &&
          diff.count { it == 0 } == MAX - 2
    }

    val ans = if (diff.count { it == 0 } == MAX) {
      degreeIn.count { it > 0 }
    }
    else if (isSemi()) 1
    else 0

    out.println(ans)
  }













































  private val isDebug = try {
    // なんか本番でエラーでる
    System.getenv("MY_DEBUG") != null
  } catch (t: Throwable) {
    false
  }

  private var tokenizer: StringTokenizer? = null
  private fun next(): String {
    while (tokenizer == null || !tokenizer!!.hasMoreTokens()) {
      tokenizer = StringTokenizer(reader.readLine())
    }
    return tokenizer!!.nextToken()
  }

  private fun ni() = next().toInt()
  private fun nl() = next().toLong()
  private fun ns() = next()
  private fun na(n: Int, offset: Int = 0): IntArray {
    return IntArray(n) { ni() + offset }
  }
  private fun nal(n: Int, offset: Int = 0): LongArray {
    val res = LongArray(n)
    for (i in 0 until n) {
      res[i] = nl() + offset
    }
    return res
  }

  private fun na2(n: Int, offset: Int = 0): Array<IntArray> {
    val a  = Array(2){IntArray(n)}
    for (i in 0 until n) {
      for (e in a) {
        e[i] = ni() + offset
      }
    }
    return a
  }

  private inline fun debug(msg: () -> String) {
    if (isDebug) System.err.println(msg())
  }

  /**
   * コーナーケースでエラー出たりするので、debug(dp[1])のように添え字付きの場合はdebug{}をつかうこと
   */
  private inline fun debug(a: LongArray) {
    debug { a.joinToString(" ") }
  }

  private inline fun debug(a: IntArray) {
    debug { a.joinToString(" ") }
  }

  private inline fun debug(a: BooleanArray) {
    debug { toString(a) }
  }

  private inline fun toString(a: BooleanArray) = run{a.map { if (it) 1 else 0 }.joinToString("")}

  private inline fun debugDim(A: Array<LongArray>) {
    if (isDebug) {
      for (a in A) {
        debug(a)
      }
    }
  }
  private inline fun debugDim(A: Array<IntArray>) {
    if (isDebug) {
      for (a in A) {
        debug(a)
      }
    }
  }
  private inline fun debugDim(A: Array<BooleanArray>) {
    if (isDebug) {
      for (a in A) {
        debug(a)
      }
    }
  }

  /**
   * 勝手にimport消されるのを防ぎたい
   */
  private fun hoge() {
    min(1, 2)
    max(1, 2)
    abs(-10)
  }

  private inline fun assert(b: Boolean) = run{if (!b) throw AssertionError()}
  private inline fun assert(b: Boolean, f: () -> String) = run{if (!b) throw AssertionError(f())}
}

fun main() {
  val out = java.io.PrintWriter(System.out)
  Solver(System.`in`, out).solve()
  out.flush()
}
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