#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;

}