2017 Multi-University Training Contest
来源:互联网 发布:阿里云大数据 编辑:程序博客网 时间:2024/06/03 14:35
http://acm.hdu.edu.cn/showproblem.php?pid=6063
题意:
如同题目所说,输入n和k求题目中的公式的结果。
思路:
注意到一个数字
代码:
#include<bits/stdc++.h>using namespace std;#define ll long longconst ll MOD = 1e9 + 7;ll myPow(ll a,ll b){ ll t = a,ans = 1; while(b){ if(b % 2){ ans = ans * t % MOD; } t = t * t % MOD; b /= 2; } return ans;}int main(){ ll cas = 1; ll n,k; while(~scanf("%lld %lld",&n,&k)){ n %= MOD; ll ans = myPow(n,k % (MOD - 1)); printf("Case #%lld: %lld\n",cas++,ans); }}
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