Problem:
Score : 100 points

Problem Statement

You are given positive integers A and B.

If A is a divisor of B, print A + B; otherwise, print B - A.

Constraints

All values in input are integers.

1 \leq A \leq B \leq 20

Input

Input is given from Standard Input in the following format:

A B

Output

If A is a divisor of B, print A + B; otherwise, print B - A.

Sample Input 1

4 12

Sample Output 1

16

As 4 is a divisor of 12, 4 + 12 = 16 should be printed.

Sample Input 2

8 20

Sample Output 2

12

Sample Input 3

1 1

Sample Output 3

2

1 is a divisor of 1.

Solution in Rust (1.42.0) (judge verdict: Accepted)

use proconio::input;

fn main (){

let mut _a : i128;
let mut _b : i128;

input! {
    a: i128,
    b: i128,
   
}

if b % a == 0 {
    let  x = a +b ;
    println!("{}",x)
}else {
    let  y = b - a ;
    println!("{}",y)
}


}