#412213 (Scala(Beta)) No.957 植林

提出ソース

結果

問題	No.957 植林
ユーザー	yakamoto
提出日時	2019-12-27 02:03:31
言語	Scala(Beta) (3.4.0)
結果	TLE (最新) AC (最初)
実行時間	-
コード長	6,433 bytes
コンパイル時間	15,544 ms
コンパイル使用メモリ	285,248 KB
実行使用メモリ	79,192 KB
最終ジャッジ日時	2024-04-15 17:57:08
合計ジャッジ時間	95,574 ms
ジャッジサーバーID （参考情報）	judge2 / judge5

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	927 ms 65,496 KB
testcase_01	AC	919 ms 65,424 KB
testcase_02	AC	910 ms 65,304 KB
testcase_03	AC	1,246 ms 71,780 KB
testcase_04	AC	1,259 ms 71,980 KB
testcase_05	AC	1,268 ms 71,876 KB
testcase_06	AC	1,294 ms 71,764 KB
testcase_07	AC	1,288 ms 71,816 KB
testcase_08	AC	1,248 ms 71,980 KB
testcase_09	AC	1,254 ms 71,804 KB
testcase_10	AC	1,277 ms 71,908 KB
testcase_11	AC	1,269 ms 71,964 KB
testcase_12	AC	1,261 ms 71,940 KB
testcase_13	AC	1,223 ms 70,148 KB
testcase_14	AC	1,255 ms 72,004 KB
testcase_15	AC	1,247 ms 71,648 KB
testcase_16	AC	1,240 ms 70,224 KB
testcase_17	AC	1,259 ms 71,940 KB
testcase_18	TLE	-
testcase_19	TLE	-
testcase_20	TLE	-
testcase_21	TLE	-
testcase_22	TLE	-
testcase_23	TLE	-
testcase_24	TLE	-
testcase_25	TLE	-
testcase_26	TLE	-
testcase_27	TLE	-
testcase_28	TLE	-
testcase_29	TLE	-
testcase_30	TLE	-
testcase_31	TLE	-
testcase_32	TLE	-
testcase_33	TLE	-
testcase_34	TLE	-
testcase_35	TLE	-
testcase_36	TLE	-
testcase_37	TLE	-
testcase_38	TLE	-
testcase_39	TLE	-
testcase_40	TLE	-
testcase_41	AC	1,167 ms 72,348 KB
testcase_42	AC	1,189 ms 72,208 KB
testcase_43	AC	1,241 ms 76,756 KB
testcase_44	AC	1,288 ms 76,824 KB
testcase_45	AC	911 ms 65,436 KB
testcase_46	AC	927 ms 65,464 KB
testcase_47	AC	913 ms 65,560 KB

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ソースコード

raw source code

object Main {
  import java.io.{BufferedReader, InputStream, InputStreamReader}
  import java.util.StringTokenizer
  import scala.reflect.ClassTag

  def main(args: Array[String]): Unit = {
    val out = new java.io.PrintWriter(System.out)
    new Main(out, new InputReader(System.in)).solve()
    out.flush()
  }

  private[this] val oj = System.getenv("MY_DEBUG") == null
  def DEBUG(f: => Unit): Unit = {
    if (!oj){ f }
  }
  def debug(as: Array[Boolean]): Unit = if (!oj){ debug(as.map(x => if(x) "1" else "0").mkString) }
  def debug(as: Array[Int]): Unit = if (!oj){ debug(as.mkString(" ")) }
  def debug(as: Array[Long]): Unit =if (!oj){ debug(as.mkString(" ")) }
  def debugDim(m: Array[Array[Int]]): Unit = if (!oj){
    REP(m.length) { i =>
      debug(m(i))
    }
  }
  def debugDimFlip(m: Array[Array[Long]]): Unit = if (!oj){
    REP(m(0).length) { j =>
      REP(m.length) { i =>
        System.err.print(m(i)(j))
        System.err.print(" ")
      }
      System.err.println()
    }
  }
  def debug(s: => String): Unit = {
    if (!oj){ System.err.println(s) }
  }
  def isDebug[A](debug: => A, online: => A): A = {
    if (oj) online else debug
  }

  class InputReader(val stream: InputStream) {
    private[this] val reader = new BufferedReader(new InputStreamReader(stream), 32768)
    private[this] var tokenizer: StringTokenizer = _

    private[this] def next(): String = {
      while (tokenizer == null || !tokenizer.hasMoreTokens)
        tokenizer = new StringTokenizer(reader.readLine)
      tokenizer.nextToken
    }

    def nextInt(): Int = Integer.parseInt(next())
    def nextLong(): Long = java.lang.Long.parseLong(next())
    def nextChar(): Char = next().charAt(0)

    def ni(): Int = nextInt()
    def nl(): Long = nextLong()
    def nc(): Char = nextChar()
    def ns(): String = next()
    def ns(n: Int): Array[Char] = ns().toCharArray
    def na(n: Int, offset: Int = 0): Array[Int] = map(n)(_ => ni() + offset)
    def na2(n: Int, offset: Int = 0): (Array[Int], Array[Int]) = {
      val A1, A2 = Array.ofDim[Int](n)
      REP(n) { i =>
        A1(i) = ni() + offset
        A2(i) = ni() + offset
      }
      (A1, A2)
    }
    def nm(n: Int, m: Int): Array[Array[Int]] = {
      val A = Array.ofDim[Int](n, m)
      REP(n) { i =>
        REP(m) { j =>
          A(i)(j) = ni()
        }
      }
      A
    }
    def nal(n: Int): Array[Long] = map(n)(_ => nl())
    def nm_c(n: Int, m: Int): Array[Array[Char]] = map(n) (_ => ns(m))
  }

  def REP(n: Int, offset: Int = 0)(f: Int => Unit): Unit = {
    var i = offset
    val N = n + offset
    while(i < N) { f(i); i += 1 }
  }
  def REP_r(n: Int, offset: Int = 0)(f: Int => Unit): Unit = {
    var i = n - 1 + offset
    while(i >= offset) { f(i); i -= 1 }
  }
  def TO(from: Int, to: Int)(f: Int => Unit): Unit = {
    REP(to - from + 1, from)(f)
  }
  def map[@specialized A: ClassTag](n: Int, offset: Int = 0)(f: Int => A): Array[A] = {
    val res = Array.ofDim[A](n)
    REP(n)(i => res(i) = f(i + offset))
    res
  }

  def sumL(as: Array[Int]): Long = {
    var s = 0L
    REP(as.length)(i => s += as(i))
    s
  }
  def cumSum(as: Array[Int]): Array[Long] = {
    val cum = Array.ofDim[Long](as.length + 1)
    REP(as.length) { i =>
      cum(i + 1) = cum(i) + as(i)
    }
    cum
  }
}

object Workspace {
  import Main._
  import java.util.Arrays.sort

  import scala.collection.mutable
  import math.{abs, max, min}
  import mutable.ArrayBuffer

  type A = Long
  type Graph = Array[ArrayBuffer[Edge]]
  case class Edge(v: Int, w: A)
  class Edge2(val to: Int, var cap: A, val rev: Int)
  def maxFlow(baseG: Graph, s: Int, t: Int, inf: A): A = {
    val n = baseG.length
    val level = Array.ofDim[Int](n)
    val iter = Array.ofDim[Int](n)

    val g = Array.fill[ArrayBuffer[Edge2]](n)(ArrayBuffer())
    def addEdge(v: Int, e: Edge): Unit = {
      g(v) += new Edge2(e.v, e.w, g(e.v).size)
      g(e.v) += new Edge2(v, 0, g(v).size - 1)
    }
    REP(n) { v =>
      REP(baseG(v).length) { j =>
        addEdge(v, baseG(v)(j))
      }
    }

    def bfs(s: Int): Unit = {
      val queue = new java.util.ArrayDeque[Int]()
      level(s) = 0
      queue.add(s)
      while(!queue.isEmpty) {
        val v = queue.poll()
        REP(g(v).length) { i =>
          val e = g(v)(i)
          if (e.cap > 0 && level(e.to) < 0) {
            level(e.to) = level(v) + 1
            queue.add(e.to)
          }
        }
      }
    }

    def dfs(v: Int, t: Int, f: A): A = {
      if (v == t) {
        f
      } else {
        while(iter(v) < g(v).length) {
          val e = g(v)(iter(v))
          if (e.cap > 0 && level(v) < level(e.to)) {
            val d = dfs(e.to, t, min(f, e.cap))
            if (d > 0) {
              e.cap -= d
              g(e.to)(e.rev).cap += d
              return d
            }
          }
          iter(v) += 1
        }
        0
      }
    }

    var flow: A = 0
    var continues = true
    while(continues) {
      import java.util
      util.Arrays.fill(iter, 0)
      util.Arrays.fill(level, -1)
      bfs(s)
      debug(level)
      if (level(t) < 0) {
        continues = false
      } else {
        var f: A = 0
        while({f = dfs(s, t, inf); f > 0}) {
          flow = min(inf, flow + f)
        }
      }
    }

    if (flow == inf) -1 else flow
  }
}

class Main(out: java.io.PrintWriter, sc: Main.InputReader) {
  import sc._
  import Main._
  import java.util.Arrays.sort

  import scala.collection.mutable
  import math.{abs, max, min}
  import mutable.ArrayBuffer
  import Workspace._

  // toIntとか+7とかするならvalにしろ
  final private[this] val MOD = 1000000007

  def solve(): Unit = {
    val H, W = ni()
    val G = nm(H, W)
    val R = na(H)
    val C = na(W)
    val g = Array.fill[ArrayBuffer[Edge]](H + W + 2)(ArrayBuffer())
    val S = H + W
    val T = S + 1
    val inf = 1e18.toLong

    REP(H) { h =>
      val id = h
      g(S) += Edge(id, max(0, sumL(G(h)) - R(h))) // 儲かるときは0にする
    }
    REP(W) { w =>
      val id = H + w
      REP(H) { h =>
        g(h) += Edge(id, G(h)(w)) // wが有効　かつ　h無効 だとGhw損する
      }
      g(id) += Edge(T, C(w)) // wが無効だと Cw損
    }

    val cut = maxFlow(g, S, T, inf)
    debug(s"cut:$cut")
    val gainH = map(H){ h => max(0, R(h) - sumL(G(h)))}.sum
    val gainW = sumL(C)
    val ans = max(0, gainH + gainW - cut)
    out.println(ans)
  }
}

yukicoder

結果

テストケース

ソースコード