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>
     
    int main() {
      int a, b;
      int arr[3] = {0};
      int max;
      
      scanf("%d %d", &a, &b);
      
      arr[0] = a + b;
      arr[1] = a - b;
      arr[2] = a * b;
      
      int i;
      for (i = 0; i < 3; i++) {
        if (max < arr[i]) {
          max = arr[i];
        }
      }
      
      printf("%d\n", max);
      
      return 0;
    }