Java :

import java.util.Scanner;

/**
 * @Author:shisan
 * @Date:2023/10/24 19:31
 */
public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        String c = sc.next();
        int res = 8;
        if (n > 1000) {
            n -= 1000;
            res += n / 500 * 4;
            if (n % 500 != 0) res += 4;
        }
        if (c.equals("y")) res += 5;
        System.out.println(res);
    }
}