题解 3014: 计算星期几

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