# CodeChef - ATM

ATM problem from CodeChef.

Problem

Pooja would like to withdraw X \$US from an ATM. The cash machine will only accept the transaction if X is a multiple of 5, and Pooja's account balance has enough cash to perform the withdrawal transaction (including bank charges). For each successful withdrawal, the bank charges 0.50 \$US.

Calculate Pooja's account balance after an attempted transaction.

Input Format

Each input contains 2 integers `X` and `Y`.
`X` is the amount of cash that Pooja wishes to withdraw.
`Y` is Pooja's initial account balance.

Output Format

Output the account balance after the attempted transaction, given as a number with two digits of precision. If there is not enough money in the account to complete the transaction, output the current bank balance.

Constraints

• 0 <= X <= 2000 - The amount of cash that pooja wishes to withdraw.
• 1 <= Y <= 2000 - With two digits of precision - pooja's initial account balance.

## Solution in Java:

``````import java.util.*;
import java.io.*;

class Solution{
public static void main(String[] args) throws Exception{