結果

問題 No.1433 Two color sequence
ユーザー yakamotoyakamoto
提出日時 2021-03-19 22:12:34
言語 Kotlin
(1.9.23)
結果
AC  
実行時間 512 ms / 2,000 ms
コード長 3,377 bytes
コンパイル時間 14,173 ms
コンパイル使用メモリ 461,148 KB
実行使用メモリ 85,344 KB
最終ジャッジ日時 2024-04-29 17:10:03
合計ジャッジ時間 25,961 ms
ジャッジサーバーID
（参考情報） 		judge3 / judge2
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 249 ms
49,920 KB
testcase_01 AC 245 ms
49,736 KB
testcase_02 AC 241 ms
49,808 KB
testcase_03 AC 450 ms
69,488 KB
testcase_04 AC 457 ms
69,860 KB
testcase_05 AC 246 ms
49,908 KB
testcase_06 AC 246 ms
49,768 KB
testcase_07 AC 251 ms
49,936 KB
testcase_08 AC 493 ms
85,344 KB
testcase_09 AC 506 ms
84,844 KB
testcase_10 AC 496 ms
75,376 KB
testcase_11 AC 501 ms
75,360 KB
testcase_12 AC 512 ms
85,284 KB
testcase_13 AC 511 ms
84,940 KB
testcase_14 AC 492 ms
84,752 KB
testcase_15 AC 496 ms
84,992 KB
testcase_16 AC 495 ms
85,168 KB
testcase_17 AC 496 ms
85,092 KB
testcase_18 AC 504 ms
84,956 KB
testcase_19 AC 486 ms
84,996 KB
testcase_20 AC 497 ms
85,060 KB
testcase_21 AC 491 ms
84,996 KB
testcase_22 AC 487 ms
85,192 KB
testcase_23 AC 503 ms
84,832 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:135:11: 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:139:11: 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:143:11: 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:147:11: 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:149:11: 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:156:11: 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:163:11: 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:180:11: 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 S = ns().map{it=='R'}
    val A = nal(N)
    val sum = LongArray(N + 1)
    for (i in 0 until N) {
      sum[i + 1] = sum[i] + (if (S[i]) A[i] else -A[i])
    }

    val inf = 1e18.toLong() + 100
    val mx = LongArray(N + 1){-inf}
    val mn = LongArray(N + 1){inf}
    for (i in N - 1 downTo 0) {
      mx[i] = max(sum[i + 1], mx[i + 1])
      mn[i] = min(sum[i + 1], mn[i + 1])
    }
    debug(sum)
    debug(mx)
    debug(mn)

    var ans = -inf
    for (i in 0 until N - 1) {
      ans = max(ans, abs(mx[i + 1] - sum[i]))
      ans = max(ans, abs(mn[i + 1] - sum[i]))
    }
    ans = max(ans, abs(sum[N] - sum[N - 1]))

    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()}
}

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