链接http://acm.nyist.net/JudgeOnline/problem.php?pid=102 #include<bits/stdc++.h>#define ll long longusing namespace std;ll qpow(ll a,ll k,ll m){ll r=1;for(;k;k>>=1){if(k&1){r=(r%m)*(a%m)%m; }a=(a%