本人题解

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