結果

問題 No.1493 隣接xor
ユーザー yakamotoyakamoto
提出日時 2021-05-01 18:27:12
言語 Kotlin
(1.9.23)
結果
AC  
実行時間 635 ms / 2,000 ms
コード長 3,159 bytes
コンパイル時間 14,985 ms
コンパイル使用メモリ 460,912 KB
実行使用メモリ 91,472 KB
最終ジャッジ日時 2024-07-20 02:22:49
合計ジャッジ時間 31,369 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 262 ms
50,064 KB
testcase_01 AC 264 ms
49,908 KB
testcase_02 AC 277 ms
49,916 KB
testcase_03 AC 635 ms
91,368 KB
testcase_04 AC 578 ms
91,084 KB
testcase_05 AC 574 ms
91,240 KB
testcase_06 AC 599 ms
91,296 KB
testcase_07 AC 583 ms
91,000 KB
testcase_08 AC 592 ms
91,220 KB
testcase_09 AC 586 ms
90,992 KB
testcase_10 AC 535 ms
90,980 KB
testcase_11 AC 574 ms
90,996 KB
testcase_12 AC 580 ms
91,252 KB
testcase_13 AC 502 ms
84,560 KB
testcase_14 AC 466 ms
67,700 KB
testcase_15 AC 272 ms
49,736 KB
testcase_16 AC 273 ms
49,872 KB
testcase_17 AC 262 ms
49,944 KB
testcase_18 AC 258 ms
49,780 KB
testcase_19 AC 263 ms
49,852 KB
testcase_20 AC 526 ms
71,488 KB
testcase_21 AC 521 ms
75,148 KB
testcase_22 AC 450 ms
67,064 KB
testcase_23 AC 472 ms
71,504 KB
testcase_24 AC 621 ms
91,472 KB
testcase_25 AC 468 ms
66,168 KB
testcase_26 AC 498 ms
77,624 KB
testcase_27 AC 418 ms
61,228 KB
testcase_28 AC 569 ms
90,228 KB
testcase_29 AC 531 ms
78,392 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:123:11: 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:127:11: 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:131:11: 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:135:11: 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:137:11: 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:144:11: 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:151:11: 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:168:11: 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 A = na(N)
    val cum = IntArray(N + 1)
    for (i in 0 until N) {
      cum[i + 1] = cum[i] xor A[i]
    }
    debug(cum)
    var ans = 1L
    val dp = HashMap<Int, Long>()
    for (i in N - 1 downTo 1) {
      val prev = dp[cum[i]] ?: 0
      dp[cum[i]] = ans
      ans = (ans*2 + (MOD - prev)) % MOD
    }
    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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