John made a huge profit out of his grocery shop. But, his profit got reduced due to his wrong calculation in providing the balance amount to his customers.

 John made a huge profit out of his grocery shop. But, his profit got reduced due to his wrong calculation in providing the balance amount to his customers.

Once he started to realize his mistakes, he is trying to make out this work with his robot. So that his profit is safe.

He finds you to provide a programming solution to his problem. Get purchase value and cash given by the customer and calculate the balance amount.

Input format

Two positive integers,

First one is the purchase value and other one is the Cash given by the customer in each line

Output format

Numerical value which is the balance amount to be given back to the Customer

Note: Printing unwanted or ill-formatted data to output will cause the test cases to fail

Sample testcases

Input 1

28
100

OUTPUT

#include<stdio.h>
#include<stdlib.h>
int main()
{
    int purchase=0;
    int cash=0;
    scanf("%d",&purchase);
    scanf("%d",&cash);
    printf("%d",cash-purchase);
    return 0;
}