My code show wrong answer when submit. please correct it?

my code was wrong answer
<-------------------------------------------->
/* package codechef; // don’t place package name! */

import java.util.;
import java.lang.
;
import java.io.*;

/* Name of the class has to be “Main” only if the class is public. */
class Codechef
{
public static void main (String[] args) throws java.lang.Exception
{
try {
Scanner sc = new Scanner(System.in);
float X = sc.nextInt();// Amount pooja like to withdraw
float Y = sc.nextInt();// Account Balance
float deduct = 0.5f;
float mul = 5;

          if((X%mul == 5) ||(X%mul == 0) && (X<=Y))
          {
            Y = Y-X-deduct;
            System.out.println(Y);
          } else{
            System.out.println(Y);
          }
        } catch(Exception e) {
            return;
    }
    
}

}
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question: Contest Page | CodeChef

I am new in codechef please help.