結果

問題 No.1645 AB's abs
ユーザー yakamotoyakamoto
提出日時 2021-08-13 21:40:58
言語 Kotlin
(1.9.23)
結果
AC  
実行時間 312 ms / 2,000 ms
コード長 3,561 bytes
コンパイル時間 17,435 ms
コンパイル使用メモリ 460,656 KB
実行使用メモリ 66,212 KB
最終ジャッジ日時 2024-10-03 18:00:30
合計ジャッジ時間 28,663 ms
ジャッジサーバーID
（参考情報） 		judge1 / judge3
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 270 ms
50,364 KB
testcase_01 AC 266 ms
50,228 KB
testcase_02 AC 307 ms
54,976 KB
testcase_03 AC 276 ms
50,356 KB
testcase_04 AC 255 ms
50,536 KB
testcase_05 AC 268 ms
50,580 KB
testcase_06 AC 280 ms
51,748 KB
testcase_07 AC 274 ms
50,424 KB
testcase_08 AC 280 ms
56,588 KB
testcase_09 AC 290 ms
56,604 KB
testcase_10 AC 286 ms
55,680 KB
testcase_11 AC 279 ms
55,684 KB
testcase_12 AC 279 ms
55,964 KB
testcase_13 AC 309 ms
65,676 KB
testcase_14 AC 301 ms
64,800 KB
testcase_15 AC 294 ms
65,532 KB
testcase_16 AC 289 ms
64,980 KB
testcase_17 AC 293 ms
65,384 KB
testcase_18 AC 288 ms
64,852 KB
testcase_19 AC 301 ms
65,708 KB
testcase_20 AC 312 ms
64,372 KB
testcase_21 AC 287 ms
65,272 KB
testcase_22 AC 293 ms
65,548 KB
testcase_23 AC 293 ms
65,864 KB
testcase_24 AC 289 ms
66,208 KB
testcase_25 AC 300 ms
66,016 KB
testcase_26 AC 300 ms
65,840 KB
testcase_27 AC 290 ms
65,868 KB
testcase_28 AC 297 ms
66,052 KB
testcase_29 AC 295 ms
66,096 KB
testcase_30 AC 292 ms
65,980 KB
testcase_31 AC 291 ms
65,976 KB
testcase_32 AC 292 ms
65,936 KB
testcase_33 AC 287 ms
65,976 KB
testcase_34 AC 290 ms
66,084 KB
testcase_35 AC 297 ms
65,976 KB
testcase_36 AC 305 ms
66,212 KB
testcase_37 AC 298 ms
65,848 KB
testcase_38 AC 297 ms
65,904 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:126:11: 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:130:11: 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:134:11: 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:138:11: 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:140:11: 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: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<IntArray>) {
          ^
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<BooleanArray>) {
          ^
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 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 = 998244353
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 MAX = 10_000 // if (isDebug) 4 else 10_000
    val dp = Array(N + 1){LongArray(MAX * 2 + 1)}
    dp[0][MAX] = 1

    for (i in 0 until N) {
      for (s in 0 .. MAX * 2) {
        if (s + A[i] in 0 .. MAX*2) dp[i + 1][s + A[i]] = (dp[i + 1][s + A[i]] + dp[i][s]) % MOD
        if (s - A[i] in 0 .. MAX*2) dp[i + 1][s - A[i]] = (dp[i + 1][s - A[i]] + dp[i][s]) % MOD
      }
    }
    var ans = 0L
    for (s in 0 .. 2*MAX) {
      val num = abs(s - MAX)
      ans = (ans + num*dp[N][s] % MOD) %MOD
    }
//    debugDim(dp)
    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())}

  companion object {
    // TestRunnerから呼びたいので単純なmainじゃだめ
    fun main() {
      val out = java.io.PrintWriter(System.out)
      Solver(System.`in`, out).solve()
      out.flush()
    }
  }
}

/**
 * judgeから呼ばれる
 */
fun main() = Solver.main()
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