题解 | #牛牛的快递#

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc=new Scanner(System.in);
        double kg=sc.nextDouble();
        char b=sc.next().charAt(0);
        int price=0;
        if(kg<=1){
            price=20;
        }else{
            price=20+(int)(kg-0.1);
        }
        if(b=='y'){
            System.out.println(price+5);
        }else{
            System.out.println(price);
        }
    }
}