結果

問題 No.1606 Stuffed Animals Keeper
ユーザー yakamotoyakamoto
提出日時 2021-07-16 22:37:22
言語 Kotlin
(1.9.23)
結果
AC  
実行時間 363 ms / 3,000 ms
コード長 3,908 bytes
コンパイル時間 19,460 ms
コンパイル使用メモリ 439,192 KB
実行使用メモリ 58,208 KB
最終ジャッジ日時 2023-09-20 14:58:06
合計ジャッジ時間 37,358 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 293 ms
56,068 KB
testcase_01 AC 291 ms
56,164 KB
testcase_02 AC 290 ms
56,120 KB
testcase_03 AC 349 ms
56,764 KB
testcase_04 AC 345 ms
56,904 KB
testcase_05 AC 337 ms
56,348 KB
testcase_06 AC 342 ms
56,704 KB
testcase_07 AC 343 ms
56,872 KB
testcase_08 AC 343 ms
56,668 KB
testcase_09 AC 337 ms
56,464 KB
testcase_10 AC 333 ms
56,240 KB
testcase_11 AC 338 ms
56,224 KB
testcase_12 AC 336 ms
56,560 KB
testcase_13 AC 307 ms
56,616 KB
testcase_14 AC 312 ms
56,668 KB
testcase_15 AC 296 ms
52,916 KB
testcase_16 AC 357 ms
56,820 KB
testcase_17 AC 351 ms
56,860 KB
testcase_18 AC 349 ms
56,792 KB
testcase_19 AC 356 ms
56,684 KB
testcase_20 AC 349 ms
56,804 KB
testcase_21 AC 340 ms
56,540 KB
testcase_22 AC 336 ms
56,544 KB
testcase_23 AC 334 ms
56,572 KB
testcase_24 AC 337 ms
58,208 KB
testcase_25 AC 337 ms
58,044 KB
testcase_26 AC 339 ms
57,116 KB
testcase_27 AC 341 ms
56,756 KB
testcase_28 AC 343 ms
56,904 KB
testcase_29 AC 342 ms
56,776 KB
testcase_30 AC 344 ms
56,852 KB
testcase_31 AC 346 ms
56,892 KB
testcase_32 AC 322 ms
57,060 KB
testcase_33 AC 343 ms
56,864 KB
testcase_34 AC 323 ms
56,640 KB
testcase_35 AC 342 ms
56,756 KB
testcase_36 AC 341 ms
56,800 KB
testcase_37 AC 338 ms
56,824 KB
testcase_38 AC 344 ms
57,060 KB
testcase_39 AC 323 ms
56,652 KB
testcase_40 AC 321 ms
56,964 KB
testcase_41 AC 309 ms
56,832 KB
testcase_42 AC 309 ms
56,592 KB
testcase_43 AC 360 ms
56,872 KB
testcase_44 AC 363 ms
57,084 KB
testcase_45 AC 352 ms
57,080 KB
testcase_46 AC 360 ms
56,900 KB
testcase_47 AC 362 ms
57,408 KB
testcase_48 AC 286 ms
56,012 KB
testcase_49 AC 287 ms
56,128 KB
testcase_50 AC 280 ms
52,652 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:157:11: 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:161:11: 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:165:11: 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:169:11: 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:171:11: 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:178:11: 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:185:11: 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:202:11: 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 Seg {
  val cnt = IntArray(2)
  fun size() = cnt[0] + cnt[1]
  override fun toString() = "(${cnt.joinToString(",")})"
}
class Solver(stream: InputStream, private val out: java.io.PrintWriter) {
  private val reader = BufferedReader(InputStreamReader(stream), 32768)

  fun solve() {
    val N = ni()
    val A = na(N)
    val cnt1 = A.count { it == 1 }

    val S = mutableListOf<Seg>()
    S += Seg()
    for (i in 0 until N) {
      if (A[i] == 2) {
        if (S.last().size() > 0) S += Seg()
      }
      else {
        S.last().cnt[A[i]]++
      }
    }

    if (S.last().size() == 0) S.removeAt(S.size - 1)

    debug{"${S.joinToString(",")}"}

    val inf = 1e9.toInt() + 100
    var cur = IntArray(cnt1 + 1){inf}
    var next = IntArray(cnt1 + 1){inf}

    cur[0] = 0

    for (i in S) {
      for (s in 0 .. cnt1) {
        for (j in 0 until 2) {
          val cost = cur[s] + i.size() - i.cnt[j]
          val ns = s + (if (j == 1) i.size() else 0)
          if (ns <= cnt1) next[ns] = min(next[ns], cost)
        }
      }

      debug(next)

      val tmp = cur
      cur = next
      next = tmp
      next.fill(inf)
    }

    val ans = if (cur[cnt1] == inf) -1 else cur[cnt1]/2 // 0->1 1->0 どっちでも数えてるので
    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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