結果
| 問題 |
No.167 N^M mod 10
|
| コンテスト | |
| ユーザー |
 mnzn
|
| 提出日時 | 2020-05-18 18:43:29 |
| 言語 | C#(csc) (csc 3.9.0) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 6,102 bytes |
| コンパイル時間 | 2,344 ms |
| コンパイル使用メモリ | 115,872 KB |
| 実行使用メモリ | 27,440 KB |
| 最終ジャッジ日時 | 2024-10-01 22:00:03 |
| 合計ジャッジ時間 | 3,445 ms |
|
ジャッジサーバーID （参考情報） |
judge5 / judge4 |
（要ログイン）
| ファイルパターン | 結果 |
|---|---|
| sample | AC * 2 |
| other | AC * 26 WA * 1 |
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.Collections;
using System.Collections.Generic;
using System.Diagnostics.CodeAnalysis;
using System.IO;
using System.Linq;
using System.Numerics;
class Program
{
static void Main(string[] args)
{
var sw = new StreamWriter(Console.OpenStandardOutput()) { AutoFlush = false };
Console.SetOut(sw);
Solve();
Console.Out.Flush();
}
static void Solve()
{
var N = sc.ReadStr();
var M = sc.ReadStr();
if (M == "0")
{
Console.WriteLine(1);
return;
}
var n = int.Parse(N.Substring(N.Length - 1, 1));
var mod = 0;
switch (n)
{
case 0:
Console.WriteLine(0);
return;
case 1:
Console.WriteLine(1);
return;
case 2:
mod = CalcMod(M, 4) - 1;
if (mod < 0) mod += 4;
Console.WriteLine(new int[] { 2, 4, 8, 6 }[mod]);
return;
case 3:
mod = CalcMod(M, 4) - 1;
if (mod < 0) mod += 4;
Console.WriteLine(new int[] { 3, 9, 7, 1 }[mod]);
return;
case 4:
mod = CalcMod(M, 2) - 1;
if (mod < 0) mod += 2;
Console.WriteLine(new int[] { 4, 8 }[mod]);
return;
case 5:
case 6:
Console.WriteLine(n);
return;
case 7:
mod = CalcMod(M, 4) - 1;
if (mod < 0) mod += 4;
Console.WriteLine(new int[] { 7, 9, 3, 1, }[mod]);
return;
case 8:
mod = CalcMod(M, 4) - 1;
if (mod < 0) mod += 4;
Console.WriteLine(new int[] { 8, 4, 2, 6 }[mod]);
return;
case 9:
mod = CalcMod(M, 2) - 1;
if (mod < 0) mod += 2;
Console.WriteLine(new int[] { 9, 1 }[mod]);
return;
default:
break;
}
}
static int CalcMod(string s, int mod)
{
var mul = 1; var res = 0;
foreach (var c in s.Reverse())
{
var x = c - '0';
res += x * mul; res %= mod;
mul *= 10; mul %= mod;
}
return res;
}
static Scanner sc = new Scanner();
}
class Scanner
{
string[] S = new string[0];
int Index = 0;
char[] Separators = new char[] { ' ' };
public string Next()
{
if (this.Index < this.S.Length) return this.S[this.Index++];
var line = "";
while (line == "") line = Console.ReadLine();
this.S = line.Split(this.Separators, StringSplitOptions.RemoveEmptyEntries);
if (this.S.Length == 0) return this.Next();
this.Index = 0;
return this.S[this.Index++];
}
public string ReadStr()
{
return this.Next();
}
public char ReadChar()
{
return this.Next()[0];
}
public int ReadInt()
{
return int.Parse(this.Next());
}
public uint ReadUInt()
{
return uint.Parse(this.Next());
}
public long ReadLong()
{
return long.Parse(this.Next());
}
public double ReadDouble()
{
return double.Parse(this.Next());
}
public Tuple<int, int> ReadTup(int add = 0)
{
return Tuple.Create(this.ReadInt() + add, this.ReadInt() + add);
}
public Tuple<long, long> ReadTupLong(int add = 0)
{
return Tuple.Create(this.ReadLong() + add, this.ReadLong() + add);
}
public Tuple<int, int, int> ReadTup3(int add = 0)
{
return Tuple.Create(this.ReadInt() + add, this.ReadInt() + add, this.ReadInt() + add);
}
public Tuple<int, int, int, int> ReadTup4(int add = 0)
{
return Tuple.Create(this.ReadInt() + add, this.ReadInt() + add, this.ReadInt() + add, this.ReadInt() + add);
}
public int[] ReadIntArray(int n)
{
var array = new int[n];
for (int i = 0; i < array.Length; i++)
{
array[i] = this.ReadInt();
}
return array;
}
public long[] ReadLongArray(int n)
{
var array = new long[n];
for (int i = 0; i < array.Length; i++)
{
array[i] = this.ReadLong();
}
return array;
}
public double[] ReadDoubleArray(int n)
{
var array = new double[n];
for (int i = 0; i < array.Length; i++)
{
array[i] = this.ReadDouble();
}
return array;
}
public char[] ReadCharArray(int n)
{
var array = new char[n];
for (int i = 0; i < array.Length; i++)
{
array[i] = this.ReadChar();
}
return array;
}
public string[] ReadStrArray(int n)
{
var array = new string[n];
for (int i = 0; i < array.Length; i++)
{
array[i] = this.ReadStr();
}
return array;
}
public Tuple<long, long>[] ReadTupLongArray(int n, int add = 0)
{
var array = new Tuple<long, long>[n];
for (int i = 0; i < n; i++)
{
array[i] = this.ReadTupLong(add);
}
return array;
}
public Tuple<int, int>[] ReadTupArray(int n, int add = 0)
{
var array = new Tuple<int, int>[n];
for (int i = 0; i < n; i++)
{
array[i] = this.ReadTup(add);
}
return array;
}
public Tuple<int, int, int>[] ReadTup3Array(int n, int add = 0)
{
var array = new Tuple<int, int, int>[n];
for (int i = 0; i < n; i++)
{
array[i] = this.ReadTup3(add);
}
return array;
}
public Tuple<int, int, int, int>[] ReadTup4Array(int n, int add = 0)
{
var array = new Tuple<int, int, int, int>[n];
for (int i = 0; i < n; i++)
{
array[i] = this.ReadTup4(add);
}
return array;
}
}