import java.util.*;
class Main
{
    public static void main(String[]args)
    {
    Scanner sc=new Scanner(System.in);
    String mode=sc.next();
    if(!(mode.equals("deposit")||mode.equals("withdraw")))
        {
            System.out.print("Invalid input");
            return;
        }
    float bal=1000.0;
    int amt=sc.nextInt();
    if(amt<0)
    {
        System.out.print("Invalid input");
        return;
    }
    int pin=sc.nextInt();
    
        if((bal-amt)<0)
        {
     System.out.print("Invalid input");
        return;
        }
        if(mode.equals("deposit"))
        {
            bal+=amt;
        }
        else if(mode.equals("withdraw"))
        {
            bal-=amt;
        }
         System.out.printf("%.1f",bal);
    }
}