Problem:
Score : 100 points

Problem Statement

You are given two integers A and B.
Find the largest value among A+B, A-B and A \times B.

Constraints

-1000 \leq A,B \leq 1000

All values in input are integers.

Input

Input is given from Standard Input in the following format:

A B

Output

Print the largest value among A+B, A-B and A \times B.

Sample Input 1

3 1

Sample Output 1

4

3+1=4, 3-1=2 and 3 \times 1=3. The largest among them is 4.

Sample Input 2

4 -2

Sample Output 2

6

The largest is 4 - (-2) = 6.

Sample Input 3

0 0

Sample Output 3

0

Solution in Rust (1.42.0) (judge verdict: Wrong Answer)

#![allow(unused_imports)]
#![allow(dead_code)]
use proconio::input;
use proconio::fastout;
use proconio::marker::{Chars};

#[fastout]
fn main() {
    input! {
        a:i32,b:i32,
    }
    let v=vec![a+b,a-b,a*b];
    let mx=v.into_iter().fold(0,i32::max);
    println!("{}",mx);
}