ATM - Codechef Solution in Java | AskTheCode

Codechef Practice Problem Solution | Java Programming | Ask The Code

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

Positive integer 0 < X <= 2000 - the amount of cash which Pooja wishes to withdraw.

Nonnegative number 0<= Y <= 2000 with two digits of precision - Pooja's initial account balance.

Output

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.

Example - Successful Transaction

Input:
30 120.00

Output:
89.50

Example - Incorrect Withdrawal Amount (not multiple of 5)

Input:
42 120.00

Output:
120.00

Example - Insufficient Funds

Input:
300 120.00

Output:
120.00

Code:


/* 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

{

Scanner sc = new Scanner(System.in);

double withdrawl_bal = sc.nextDouble();

double curr_bal = sc.nextDouble();

if (withdrawl_bal % 5 == 0 && curr_bal >= withdrawl_bal + 0.5){

curr_bal = curr_bal - (withdrawl_bal + 0.5);

}

// your code goes here

System.out.printf("%.2f",curr_bal);

}

}


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