#include <iostream>
using namespace std;

int main() {
	string s1,s2;
	int a = 8,b = 31;
	cin >> s1 >> s2;
	if(s1 == "Sat" || s1 == "Sun" || s1 == "sat" || s1 == "sun")
	b++;
	if(b==32 && (s2 == "Sat" || s2 == "Sun" || s2 == "sat" || s2 == "sun"))
	b++;
	cout << a << "/" << b;
	return 0;
}