#include <bits/stdc++.h>

using namespace std;

int main() {
    //cin读入优化
    std::ios::sync_with_stdio(false);
    int n;
    char jiaji;
    int sum = 8;
    cin >> n >> jiaji;

    if (n >= 1000) sum += ceil(1.0 * (n - 1000) / 500) * 4;
    if (jiaji == 'y') sum += 5;
    cout << sum << endl;
    return 0;
}