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 C (GCC 5.4.1) (judge verdict: Accepted)

#include <stdio.h>

int main(){

    int A, B,  val1, val2, val3;

    scanf("%d %d", &A, &B);

    val1 = A+B;
    val2 = A-B;
    val3 = A*B;

    if(val1 > val2 && val1 > val3){
        printf("%d\n", val1);
    }else if(val1 < val2 && val2 > val3){
        printf("%d\n", val2);
    }else if(val3 > val2 && val3 > val1){
        printf("%d\n", val3);
    }else if(val1 == val2 || val2 == val3 || val1 == val3){
        printf("%d\n", val1);
    }


    return 0;
}