結果
問題 | No.1410 A lot of Bit Operations |
ユーザー |
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提出日時 | 2021-02-27 04:24:55 |
言語 | Kotlin (2.1.0) |
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 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 2 |
other | AC * 44 |
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
import java.io.BufferedReaderimport java.io.InputStreamimport java.io.InputStreamReaderimport java.lang.AssertionErrorimport java.util.*import kotlin.math.absimport kotlin.math.maximport kotlin.math.minval MOD = 1_000_000_007fun powMod(a: Int, n: Long, mod: Int): Long {if (n == 0L) return 1val 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 = 0Lfor (i in 0 until 8) {if (K[i] == '-') continueif (N == 0L) {ans++continue}val coef = when(Integer.bitCount(i)) {0, 4 -> 161, 3 -> 10else -> 8}// bits = 2*(2^(n-1) - 1// coef = 1^2 + 3^2// 4^(n-2)*bits*coef// 4^3*2val bits = 2*(powMod(2, N - 1, MOD) + (MOD-1))%MODval contribute = (powMod(4, N - 2, MOD)*coef%MOD*bits + powMod(4, N, MOD)*2)%MODans = (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? = nullprivate 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()}