#include <bits/stdc++.h> 
using namespace std;
int main() { 
    int weight; 
    char urgent; 
    cin >> weight >> urgent; 
    int total_cost = 8; 
    if (weight > 1000) { 
        int excess = weight - 1000; 
        int units = excess / 500; 
        if (excess % 500 != 0) { 
            units += 1; 
        } 
    total_cost += units * 4; 
    }
    if (urgent == 'y') {
        total_cost += 5;
    }
    cout << total_cost << endl;
    return 0;
}