2

#include <bits/stdc++.h>
using namespace std;
int main()
{
int a;
cin>>a;
a=a+1;
if(a%70)
{
cout<<"sunday";
}
else if(a%71)
{
cout<<"monday";
}
else if(a%72)
{
cout<<"tuesday";
}
else if(a%73)
{
cout<<"wednesday";
}
else if(a%74)
{
cout<<"thursday";
}
else if(a%75)
{
cout<<"friday";
}
else if(a%7==6)
{
cout<<"saturday";
}

}