OK

#include <iostream>
using namespace std;

int main(){
int n,r;
cin>>n;
r=1+n%7;
if (r1){
cout<<"monday";
}
if (r2){
cout<<"tuesday";
}
if (r3){
cout<<"wednesday";
}
if (r4){
cout<<"thurday";
}
if (r5){
cout<<"friday";
}
if (r6){
cout<<"saturday";
}
if(r==7){
cout<<"sunday";
}
return 0;
}