結果

問題 No.1410 A lot of Bit Operations
ユーザー yakamotoyakamoto
提出日時 2021-02-27 03:46:37
言語 Kotlin
(1.9.23)
結果
WA  
実行時間 -
コード長 3,273 bytes
コンパイル時間 16,027 ms
コンパイル使用メモリ 463,216 KB
実行使用メモリ 54,596 KB
最終ジャッジ日時 2024-04-10 15:07:03
合計ジャッジ時間 30,963 ms
ジャッジサーバーID
（参考情報） 		judge5 / judge2
このコードへのチャレンジ
（要ログイン）

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 267 ms
54,508 KB
testcase_01 AC 272 ms
54,456 KB
testcase_02 AC 260 ms
54,324 KB
testcase_03 WA -
testcase_04 AC 266 ms
54,420 KB
testcase_05 AC 279 ms
54,268 KB
testcase_06 AC 282 ms
54,336 KB
testcase_07 AC 273 ms
54,356 KB
testcase_08 AC 272 ms
54,404 KB
testcase_09 AC 275 ms
54,396 KB
testcase_10 AC 280 ms
54,184 KB
testcase_11 AC 300 ms
54,400 KB
testcase_12 AC 287 ms
54,384 KB
testcase_13 AC 292 ms
54,268 KB
testcase_14 AC 289 ms
54,444 KB
testcase_15 AC 288 ms
54,464 KB
testcase_16 AC 290 ms
54,476 KB
testcase_17 AC 286 ms
54,568 KB
testcase_18 AC 289 ms
54,440 KB
testcase_19 AC 290 ms
54,340 KB
testcase_20 AC 291 ms
54,396 KB
testcase_21 AC 291 ms
54,292 KB
testcase_22 AC 289 ms
54,436 KB
testcase_23 AC 295 ms
54,468 KB
testcase_24 AC 293 ms
54,500 KB
testcase_25 AC 295 ms
54,300 KB
testcase_26 WA -
testcase_27 AC 294 ms
54,332 KB
testcase_28 AC 290 ms
54,412 KB
testcase_29 AC 292 ms
54,440 KB
testcase_30 AC 289 ms
54,308 KB
testcase_31 AC 286 ms
54,404 KB
testcase_32 AC 287 ms
54,488 KB
testcase_33 AC 290 ms
54,404 KB
testcase_34 AC 289 ms
54,416 KB
testcase_35 AC 289 ms
54,288 KB
testcase_36 AC 286 ms
54,312 KB
testcase_37 AC 286 ms
54,412 KB
testcase_38 AC 290 ms
54,256 KB
testcase_39 AC 301 ms
54,460 KB
testcase_40 AC 297 ms
54,284 KB
testcase_41 AC 291 ms
54,380 KB
testcase_42 WA -
testcase_43 WA -
testcase_44 AC 294 ms
54,436 KB
testcase_45 AC 288 ms
54,316 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: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: LongArray) {
          ^
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: IntArray) {
          ^
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: BooleanArray) {
          ^
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 toString(a: BooleanArray) = run{a.map { if (it) 1 else 0 }.joinToString("")}
          ^
Main.kt:145:11: 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:152:11: 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:159:11: 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:176:11: 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

fun powMod(a: Int, n: Long, mod: Int): Long {
  if (n == 0L) return 1
  val res = powMod((a.toLong() * a % mod).toInt(), n / 2, mod)
  return if (n % 2 == 1L) res * a % mod else res
}
class Solver(stream: InputStream, private val out: java.io.PrintWriter) {
  private val reader = BufferedReader(InputStreamReader(stream), 32768)

  private val N = nl()
  private val K = ns()
  fun solve() {
    var ans = 0L
    for (i in 0 until 8) {
      if (K[i] == '-') continue
      val coef = when(Integer.bitCount(i)) {
        0, 4 -> 16
        1, 3 -> 10
        else -> 8
      }

      // bits = 2*(2^(n-1) - 1
      // coef = 1^2 + 3^2
      // 4^(n-2)*bits*coef
      // 4^3*2
      val bits = 2*(powMod(2, N - 1, MOD) + (MOD-1))%MOD
      val contribute = (powMod(4, N - 2, MOD)*coef*bits + powMod(4, N, MOD)*2)%MOD
      ans = (ans + contribute)%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())
  }

  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()
}
0