tijie

#include<bits/stdc++.h>
using namespace std;
int main(){
    long long a;
    cin>>a;
    a%=7;
    long long c=a%7%7%7%7%7%7;
    if(c==1){
        cout<<"tuesday";
    }else if(c==2){
        cout<<"wednesday";
    }else if(c==3){
        cout<<"thursday";
    }else if(c==4){
        cout<<"friday";
    }else if(c==5){
        cout<<"saturday";
    }else if(c==6){
        cout<<"sunday";
    }else if(c==0){
        cout<<"monday";
    }
    return 0;
}