#include <bits/stdc++.h>
using namespace std;

int main() {
    int weight;
    char urgent;
    cin >> weight >> urgent;  
    int total = 8;  
    if (weight > 1000) {
        int over = weight - 1000;
        int count = (over + 499) / 500; 
        total += count * 4;
    }
    if (urgent == 'y') {
        total += 5;
    }

    cout << total << endl;
    return 0;
}