#206698 (C++11（廃止可能性あり）) No.167 N^M mod 10

• 問題: No.167 N^M mod 10
• ユーザー: komori3
• 提出日時: 2017-09-27 03:09:26
• 言語: C++11（廃止可能性あり） (gcc 13.3.0)
• 結果: AC
• 実行時間: 2 ms / 1,000 ms
• コード長: 2,076 bytes
• コンパイル時間: 637 ms
• コンパイル使用メモリ: 76,276 KB
• 実行使用メモリ: 5,376 KB
• 最終ジャッジ日時: 2024-09-22 01:42:59
• 合計ジャッジ時間: 1,366 ms
• ジャッジサーバーID （参考情報）: judge1 / judge3

ファイルパターン	結果
sample	AC * 2
other	AC * 27

ソースコード

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#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include <cmath>
#include <string>
#include <vector>
#include <algorithm>
#include <queue>
#include <map>
#include <functional>
#include <set>
#include <numeric>
#include <stack>
#include <utility>
#include <time.h>
//#include "util.h"
using namespace std;
typedef unsigned uint;
typedef long long ll;
typedef unsigned long long ull;
template <typename _KTy, typename _Ty> ostream& operator << (ostream& ostr, const pair<_KTy, _Ty>& m) { cout << "{" << m.first << ", " << m.second << 
    "}"; return ostr; }
template <typename _KTy, typename _Ty> ostream& operator << (ostream& ostr, const map<_KTy, _Ty>& m) { if (m.empty()) { cout << "{ }"; return ostr; } 
    cout << "{" << *m.begin(); for (auto itr = ++m.begin(); itr != m.end(); itr++) { cout << ", " << *itr; } cout << "}"; return ostr; }
template <typename _Ty> ostream& operator << (ostream& ostr, const vector<_Ty>& v) { if (v.empty()) { cout << "{ }"; return ostr; } cout << "{" << v
    .front(); for (auto itr = ++v.begin(); itr != v.end(); itr++) { cout << ", " << *itr; } cout << "}"; return ostr; }
template <typename _Ty> ostream& operator << (ostream& ostr, const set<_Ty>& s) { if (s.empty()) { cout << "{ }"; return ostr; } cout << "{" << *(s
    .begin()); for (auto itr = ++s.begin(); itr != s.end(); itr++) { cout << ", " << *itr; }    cout << "}"; return ostr; }
#define PI 3.14159265358979323846
#define EPS 1e-6
#define MIN(a,b) ((a)<(b)?(a):(b))
#define MAX(a,b) ((a)>(b)?(a):(b))
#define all(x) (x).begin(), (x).end()
ll ExpMod(ll n, ll p, ll m) {
    ll res = 1;
    for (ll i = 1; i <= p; i <<= 1) {
        if (p & i) {
            res = res * n % m;
        }
        n = n * n % m;
    }
    return res;
}
int yuki0167() 
{
    string N, M;
    ll n, m;
    cin >> N >> M;
    N = N.substr(N.size() - 1);
    n = stoi(N);
    if (M.size() > 2) {
        M = M.substr(M.size() - 2);
        m = stoi(M) + 100;
    }
    else
        m = stoi(M);
    cout << ExpMod(n, m, 10) << endl;
    return 0;
}
int main()
{
    //clock_t start, end;
    //start = clock();
    yuki0167();
    //end = clock();
    //printf("%d msec.\n", end - start);
    return 0;
}
 
 
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