#include<iostream>
using namespace std;
int main(){
int n;
cin>>n;
n=(n+1)%7;
if(n1){
cout<<"monday";
}
else if(n2){
cout<<"tuesday";
}
else if(n3){
cout<<"wednesday";
}
else if(n4){
cout<<"thursday";
}
else if(n5){
cout<<"friday";
}
else if(n6){
cout<< "saturday";
}
else if(n==0){
cout<< "sunday";
}
return 0;
}
