結果

問題 No.1410 A lot of Bit Operations
ユーザー yakamotoyakamoto
提出日時 2021-02-27 04:24:55
言語 Kotlin
(1.9.23)
結果
AC  
実行時間 258 ms / 2,000 ms
コード長 3,338 bytes
コンパイル時間 13,303 ms
コンパイル使用メモリ 463,700 KB
実行使用メモリ 54,504 KB
最終ジャッジ日時 2024-10-02 16:56:38
合計ジャッジ時間 26,009 ms
ジャッジサーバーID
（参考情報） 		judge4 / judge1
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 240 ms
54,280 KB
testcase_01 AC 244 ms
54,328 KB
testcase_02 AC 246 ms
54,340 KB
testcase_03 AC 246 ms
54,188 KB
testcase_04 AC 251 ms
54,344 KB
testcase_05 AC 253 ms
54,280 KB
testcase_06 AC 251 ms
54,180 KB
testcase_07 AC 243 ms
54,380 KB
testcase_08 AC 242 ms
54,472 KB
testcase_09 AC 255 ms
54,272 KB
testcase_10 AC 252 ms
54,412 KB
testcase_11 AC 254 ms
54,400 KB
testcase_12 AC 243 ms
54,364 KB
testcase_13 AC 246 ms
54,180 KB
testcase_14 AC 243 ms
54,288 KB
testcase_15 AC 246 ms
54,132 KB
testcase_16 AC 241 ms
54,336 KB
testcase_17 AC 249 ms
54,176 KB
testcase_18 AC 255 ms
54,256 KB
testcase_19 AC 247 ms
54,328 KB
testcase_20 AC 247 ms
54,040 KB
testcase_21 AC 254 ms
54,396 KB
testcase_22 AC 248 ms
54,092 KB
testcase_23 AC 255 ms
54,456 KB
testcase_24 AC 248 ms
54,504 KB
testcase_25 AC 245 ms
54,436 KB
testcase_26 AC 247 ms
54,228 KB
testcase_27 AC 250 ms
54,276 KB
testcase_28 AC 256 ms
54,252 KB
testcase_29 AC 258 ms
54,164 KB
testcase_30 AC 249 ms
54,284 KB
testcase_31 AC 247 ms
54,428 KB
testcase_32 AC 249 ms
54,288 KB
testcase_33 AC 253 ms
54,144 KB
testcase_34 AC 243 ms
54,112 KB
testcase_35 AC 254 ms
54,436 KB
testcase_36 AC 252 ms
54,196 KB
testcase_37 AC 254 ms
54,172 KB
testcase_38 AC 252 ms
54,316 KB
testcase_39 AC 248 ms
54,176 KB
testcase_40 AC 242 ms
54,412 KB
testcase_41 AC 244 ms
54,176 KB
testcase_42 AC 248 ms
54,344 KB
testcase_43 AC 244 ms
54,332 KB
testcase_44 AC 240 ms
54,444 KB
testcase_45 AC 243 ms
54,280 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:136:11: 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:140:11: 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:144:11: 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:148:11: 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:150:11: 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:157:11: 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:164:11: 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:181:11: 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
      if (N == 0L) {
        ans++
        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%MOD*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()
}
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