1.快速幂
#include<bits/stdc++.h>
using namespace std;
int main()
{int a, n, r = 1;//r:结果cin>>a>>n;while(n){if(n & 1) r*=a;//如果b当前二进制为1就要乘上这个数n>>=1; //将b末尾…
France usually was taken as an object of mockery in Europeans countries, Japan, The Three, Russia, so on.
because France is bad.
"Dogs And Chinese No Admitted" is a famous sign in ancient Chi…