結果

問題 No.1400 すごろくで世界旅行
ユーザー yakamotoyakamoto
提出日時 2021-02-19 23:40:30
言語 Kotlin
(1.9.23)
結果
TLE  
実行時間 -
コード長 4,874 bytes
コンパイル時間 20,364 ms
コンパイル使用メモリ 471,280 KB
実行使用メモリ 186,760 KB
最終ジャッジ日時 2024-09-16 23:42:50
合計ジャッジ時間 31,993 ms
ジャッジサーバーID
（参考情報） 		judge2 / judge4
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 303 ms
60,032 KB
testcase_01 AC 312 ms
94,456 KB
testcase_02 AC 305 ms
63,596 KB
testcase_03 AC 463 ms
59,400 KB
testcase_04 AC 415 ms
59,244 KB
testcase_05 AC 410 ms
59,276 KB
testcase_06 AC 671 ms
65,340 KB
testcase_07 AC 802 ms
64,456 KB
testcase_08 AC 489 ms
60,084 KB
testcase_09 AC 465 ms
60,072 KB
testcase_10 AC 503 ms
60,200 KB
testcase_11 AC 450 ms
59,672 KB
testcase_12 AC 1,170 ms
79,072 KB
testcase_13 TLE -
testcase_14 -- -
testcase_15 -- -
testcase_16 -- -
testcase_17 -- -
testcase_18 -- -
testcase_19 -- -
testcase_20 -- -
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:209:11: 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:213:11: 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:217:11: 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:221:11: 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:223:11: 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:230:11: 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:237:11: 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:254:11: 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 UnionFind(n: Int) {
  private val par = IntArray(n){it}
  private val rank = IntArray(n){1} // 集合の要素数
  private val visits = IntArray(n) // 訪れた場所をfind毎に用意するのがもったいないのでつかいまわす

  fun find(x: Int): Int {
    var ptr = 0
    var i = x
    while(par[i] != i) {
      visits[ptr++] = i
      i = par[i]
    }

    for (j in 0 until ptr) {
      par[visits[j]] = i
    }
    return i
  }

  private fun merge(node: Int, rt: Int): Int {
    par[node] = rt
    rank[rt] += rank[node]
    return rt
  }

  fun unite(x: Int, y: Int): Boolean {
    val x1 = find(x)
    val y1 = find(y)
    return if (x1 == y1) false
    else {
      if (rank[x1] < rank[y1])
        merge(x1, y1)
      else
        merge(y1, x1)

      true
    }
  }

  fun isSame(x: Int, y: Int) = find(x) == find(y)

  fun isRoot(x: Int) = par[x] == x

  /**
   * xを解決する必要がないときは直にrankをみる
   */
  fun cntNodes(x: Int): Int = rank[find(x)]

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

  private val N = ni()
  private val D = nl()

  fun merge(A1: Array<BooleanArray>, A2: Array<BooleanArray>, dst: Array<BooleanArray>): Array<BooleanArray> {
    val uf = UnionFind(N * 3)
    for (i in 0 until N) {
      for (j in 0 until N) {
        if (A1[i][j]) uf.unite(i, j+N)
        if (A2[i][j]) uf.unite(i+N, j+N*2)
      }
    }

    for (i in 0 until N) {
      for (j in i until N) {
        if (uf.isSame(i, j+2*N)) {
          dst[i][j] = true
          dst[j][i] = true
        }
      }
    }

    return dst
  }

  fun solve() {
    val grid = Array(N){ns()}
    val A0 = Array(N){BooleanArray(N)}
    for (i in 0 until N) {
      for (j in 0 until N) {
        A0[i][j] = grid[i][j] == '1'
      }
    }
    debug{"A0"}
    debugDim(A0)
    val As = mutableListOf<Array<BooleanArray>>()
    As.add(A0)
    for (i in 0 until 59) {
      val A = Array(N){BooleanArray(N)}
      merge(As.last(), As.last(), A)
      As += A
    }
    debug{"A[last]"}
    debugDim(As.last())
    var B: Array<BooleanArray>? = null
    for (i in 0 until 60) {
      if ((D shr i and 1) == 1L) {
        B = if (B == null) As[i] else merge(B, As[i], B)
      }
    }
    debug{"B"}
    debugDim(B!!)

    val test = B.all { it.all { it } }
    val msg = if (test) "Yes" else "No"
    out.println(msg)
  }













































  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())
  }

  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()}
}

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