Problem:
Score : 100 points

Problem Statement

We have two integers: A and B.

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

Constraints

All values in input are integers.

-100 \leq A,\ B \leq 100

Input

Input is given from Standard Input in the following format:

A B

Output

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

Sample Input 1

-13 3

Sample Output 1

-10

The largest number among A + B = -10, A - B = -16, and A \times B = -39 is -10.

Sample Input 2

1 -33

Sample Output 2

34

The largest number among A + B = -32, A - B = 34, and A \times B = -33 is 34.

Sample Input 3

13 3

Sample Output 3

39

The largest number among A + B = 16, A - B = 10, and A \times B = 39 is 39.

Solution in C++14 (GCC 5.4.1) (judge verdict: Accepted)

//
// Created by 伊東麻沙美 on 2019/10/22.
//

#include<iostream>
#include<algorithm>
using namespace std;


int main(){

    int a,b;
    cin>>a>>b;

    int num1,num2,num3,max;
    num1 = a+b;
    num2 = a-b;
    num3 = a*b;

    max = num1;
    if(max<num2){
        max = num2;
    }
    if(max<num3){
        max = num3;
    }

    cout<<max;
    return 0;
}