#include <bits/stdc++.h>
using namespace std;
long long a, b = 8, c, d, g, h, i, j;
double e;
char f;

int main() {
	cin >> a >> f;
	c = a - 1000;
	if (f == 'y') {
		b = b + 5;
	} else {
		b = 8;
	}
	e = c / 500.0;
	g = ceil(e);
	h = g * 4;
	cout << b + h;
	return 0;
}