結果
問題 | No.251 大きな桁の復習問題(1) |
ユーザー |
![]() |
提出日時 | 2018-03-15 03:46:28 |
言語 | C#(csc) (csc 3.9.0) |
結果 |
AC
|
実行時間 | 31 ms / 5,000 ms |
コード長 | 4,258 bytes |
コンパイル時間 | 1,950 ms |
コンパイル使用メモリ | 109,056 KB |
実行使用メモリ | 18,176 KB |
最終ジャッジ日時 | 2024-12-14 04:42:44 |
合計ジャッジ時間 | 2,807 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge2 |
(要ログイン)
ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 21 |
コンパイルメッセージ
Microsoft (R) Visual C# Compiler version 3.9.0-6.21124.20 (db94f4cc) Copyright (C) Microsoft Corporation. All rights reserved.
ソースコード
using System;using System.IO;using System.Collections.Generic;namespace No251_1{public class Program{void Solve(StreamScanner ss, StreamWriter sw){//---------------------------------ModInt.Mod = 129402307;var N = ss.Next(s => s);var M = ss.Next(s => s);var pn = ParseBigString(N, ModInt.Mod);var pm = ParseBigString(M, ModInt.Mod - 1);if (M == "0") sw.WriteLine(1);else if (pn == 0) sw.WriteLine(0);else sw.WriteLine(((ModInt)pn).Pow(pm));//---------------------------------}long ParseBigString(string str, long mod){var ret = 0L;foreach (var c in str) ret = (ret * 10 + (c - '0')) % mod;return ret;}static void Main(){var ss = new StreamScanner(new StreamReader(Console.OpenStandardInput()));var sw = new StreamWriter(Console.OpenStandardOutput()) {AutoFlush = false};new Program().Solve(ss, sw);sw.Flush();}}public static partial class MathX{public static int GcdEx(int a, int b, out int x, out int y){if (b == 0){x = 1;y = 0;return a;}int tx, ty;var gcd = GcdEx(b, a % b, out tx, out ty);x = ty;y = tx - ty * (a / b);return gcd;}}public struct ModInt{public static int Mod = 1000000007;readonly long value;public int Value { get { return (int)value; } }public ModInt Inverse { get { return GetInverse(); } }public ModInt(long value){value %= Mod;this.value = value < 0 ? value + Mod : value;}ModInt GetInverse(){int x, y;if (MathX.GcdEx(Value, Mod, out x, out y) != 1){throw new InvalidOperationException("'Value' and 'Mod' must be disjoint.");}return x;}public ModInt Square(){return this * this;}public ModInt Pow(long exp){if (exp == 0) return 1;if (exp % 2 == 0) return Pow(exp / 2).Square();return this * Pow(exp - 1);}public static ModInt Parse(string str){return long.Parse(str);}public static implicit operator ModInt(long value){return new ModInt(value);}public static ModInt operator +(ModInt left, ModInt right){return left.value + right.value;}public static ModInt operator -(ModInt left, ModInt right){return left.value - right.value;}public static ModInt operator *(ModInt left, ModInt right){return left.value * right.value;}public static ModInt operator /(ModInt left, ModInt right){return left * right.Inverse;}public override bool Equals(object obj){if (!(obj is ModInt)) return false;return value == ((ModInt)obj).value;}public override int GetHashCode(){return value.GetHashCode();}public override string ToString(){return value.ToString();}}public class StreamScanner{static readonly char[] Sep = {' '};readonly Queue<string> buffer = new Queue<string>();readonly TextReader textReader;public StreamScanner(TextReader textReader){this.textReader = textReader;}public T Next<T>(Func<string, T> parser){if (buffer.Count != 0) return parser(buffer.Dequeue());var nextStrings = textReader.ReadLine().Split(Sep, StringSplitOptions.RemoveEmptyEntries);foreach (var nextString in nextStrings) buffer.Enqueue(nextString);return Next(parser);}}}