20分的代码如下/

#include <bits/stdc++.h>
using namespace std;
int main(){
    int a , b;
    long long c;
    cin >> a >> b;
    c = pow(a,b);
    if(c%7==0) cout << "Sunday";
    else if(c%7==1) cout << "Monday";
    else if(c%7==2) cout << "Tuesday";
    else if(c%7==3) cout << "Wednesday";
    else if(c%7==4) cout << "Thursday";
    else if(c%7==5) cout << "Firday";
    else if(c%7==6) cout << "Saturday";
}

求助，呜呜，难道是pow()函数用错了？？？