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 (GCC 5.4.1) (judge verdict: Wrong Answer)

#include<stdio.h>

void compare(int A[]){
    int a,b,c;
    a = A[0] + A[1];
    b = A[0] - A[1];
    c = A[0] * A[1];

    if(a > b && a > c) printf("%d", a);
    if(a < b && b > c) printf("%d", b);
    if(b < c && a < c) printf("%d", c);
}

int main(){
    int i;
    int A[3];
    for(i=0; i<2; i++) scanf("%d", &A[i]);
    compare(A);
    return 0;
}