#include <iostream>
using namespace std;
int main()
{
	int a, c,i;
	char e;
	cin >> a >> e;
	if (a <= 1000 && e == 'n')
		cout << "8";
	else if (a > 1000 && e == 'n')
		cout << "12";
	else if (a <= 1000 && e == 'y')
		cout << "13";
	else if (a > 1000 && e == 'y')
		cout << "17";
	return 0;

}