666

#include<iostream>
using namespace std;
int main(){
int a;
cin>>a;
a=(a+1)%7;
if(a1){
cout<<"monday";
}else if(a2){
cout<<"tuesday";
}else if(a3){
cout<<"wednesday";
}else if(a4){
cout<<"thursday";
}else if(a5){
cout<<"friday";
}else if(a6){
cout<<"saturday";
}else if(a==0){
cout<<"sunday";
}
return 0;
}