結果

問題 No.251 大きな桁の復習問題(1)
ユーザー AreTrashAreTrash
提出日時 2018-03-15 03:42:57
言語 C#(csc)
(csc 3.9.0)
結果
WA  
実行時間 -
コード長 4,176 bytes
コンパイル時間 1,161 ms
コンパイル使用メモリ 112,052 KB
実行使用メモリ 26,276 KB
最終ジャッジ日時 2024-05-08 04:09:28
合計ジャッジ時間 2,761 ms
ジャッジサーバーID
（参考情報） 		judge1 / judge4
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 27 ms
24,184 KB
testcase_01 WA -
testcase_02 AC 27 ms
26,276 KB
testcase_03 AC 27 ms
26,220 KB
testcase_04 AC 26 ms
23,984 KB
testcase_05 AC 26 ms
26,012 KB
testcase_06 AC 26 ms
24,052 KB
testcase_07 AC 27 ms
24,044 KB
testcase_08 AC 27 ms
24,176 KB
testcase_09 AC 33 ms
23,888 KB
testcase_10 AC 32 ms
24,180 KB
testcase_11 AC 32 ms
24,056 KB
testcase_12 AC 33 ms
26,216 KB
testcase_13 AC 33 ms
26,044 KB
testcase_14 AC 33 ms
23,924 KB
testcase_15 AC 33 ms
26,180 KB
testcase_16 AC 33 ms
24,368 KB
testcase_17 AC 32 ms
24,176 KB
testcase_18 AC 33 ms
24,304 KB
testcase_19 AC 33 ms
24,056 KB
testcase_20 AC 27 ms
24,112 KB
testcase_21 AC 27 ms
26,160 KB
testcase_22 AC 27 ms
24,236 KB
testcase_23 AC 27 ms
24,052 KB
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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

diff # 

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);
            sw.WriteLine(pn == 0 ? 0 : ((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);
        }
    }
}
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