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: Wrong Answer)

#include <stdio.h>
#include <string.h>

int max(int*);

int main(void){
    int a;
    int b;
    scanf("%d %d", &a, &b);
    
    int num[3];
    int n;
    num[0] = a+b;
    num[1] = a-b;
    num[2] = a*b;

    printf("%d\n",max(num));

    return 0;

}int max(int *all){
    int max=all[0];
    for(int i= 0; i<3; ++i){
        if(all[0] < all[i]){
            max = all[i];
        }
    }

    return max;
}