快速幂

#include <iostream>
using namespace std;
int quick(int a,int b)
{
    int s=1;
    while(b)
    {
        if(b%2==1) s*=a;
        a*=a;
        b/=2;
    }
    return s;
}

int main()
{
    int a,b;
    cin>>a>>b;
    int s=quick(a,b);
    cout<<s;
}