AC

#include <iostream>
using namespace std;
int main()
{
int n;
cin>>n;
int res=(1+n)%7;
if(res0){
cout<<"sunday"<<endl;
}else if(res1){
cout<<"monday"<<endl;
}else if(res2){
cout<<"tuesday"<<endl;
}else if(res3){
cout<<"wednesday"<<endl;
}else if(res4){
cout<<"thursday"<<endl;
}else if(res5){
cout<<"friday"<<endl;
}else if(res==6){
cout<<"saturday"<<endl;
}
return 0;
}