题解

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

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