蒟蒻求助大佬，这题36分wa了两个点，T了2个点

#include<bits/stdc++.h>
using namespace std;
int main()
{
	int a, b, p, sum = 1;
    cin >> a >> b >> p;
    for(int i = 1; i <= b; i++)
    {
        sum *= a;
        sum %= p;
    }
    cout << a << "^" << b << " mod " << p << "=" << sum;
    return 0;
}