tijie

#include<bits/stdc++.h>
using namespace std;
string d[7]={"monday","tuesday","wednesday","thursday","friday","saturday","sunday"};
int main(){
int n;cin>>n;
if(n==0) cout<<d[0];
else if(1+n<=7) cout<<d[n];
else cout<<d[n%7];
return 0;
}