#include <bits/stdc++.h>

using namespace std;

int main(){
	string s;
	cin >> s;
	if(s == "SUN")
		cout << 7;
	else if(s == "MON")
		cout << 6;
	else if(s == "TUE")
		cout << 5;
	else if(s == "WED")
		cout << 4;
	else if(s == "THU")
		cout << 3;
	else if(s == "FRI")
		cout << 2;
	else if(s == "SAT")
		cout << 1;
	return 0;
}
