#include <iostream>

using namespace std;

int main()
{
    int n;
    cin >> n;

    int n_mod = n % 7;

    if (n_mod == 1)
        cout << "MONDAY";
    else if (n_mod == 2)
        cout << "TUESDAY";
    else if (n_mod == 3)
        cout << "WEDNESDAY";
    else if (n_mod == 4)
        cout << "FRIDAY";
    else if (n_mod == 5)
        cout << "THURSDAY";
    else if (n_mod == 6)
        cout << "SATURDAY";
    else if (n_mod == 0)
        cout << "SUNDAY";
}