#include <iostream>
using namespace std;
int main() {
// your code goes here
char x;
cin>>x;
switch (x){
case '1' :
cout <<"saturday"<<endl;
break;
case '2' :
cout <<"sunday"<<endl;
break;
case '3' :
cout <<"monday"<<endl;
break;
case '4' :
cout <<"tuesday"<<endl;
break;
case '5' :
cout<<"wednesday"<<endl;
break;
case '6' :
cout<<"thursday"<<endl;
break;
case '7':
cout<<"friday"<<endl;
break;
default :
cout<<"wrong"<<endl;
}
return 0;
}
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