#include<iostream>
using namespace std;
int main() {
    int n;// pobierana liczba
    cin>>n;
    if(n%7==0) cout <<"SUNDAY\n";
    if(n%7==1) cout <<"MONDAY\n";
    if(n%7==2) cout <<"TUESDAY\n";
    if(n%7==3) cout <<"WEDNESDAY\n";
    if(n%7==4) cout <<"THURSDAY\n";
    if(n%7==5) cout <<"FRIDAY\n";
    if(n%7==6) cout <<"SATURDAY\n";
    return 0;
}