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(void)
{
  int a = 0;
  int b = 0;
  int data[3] = {0};
  int buffer = 0;
  int i = 0, j = 0;

  scanf("%d %d", &a, &b);

  data[0] = a + b;
  data[1] = a - b;
  data[2] = a * b;

  for(i = 0; i< 2; i++){
    for(j = 1; j< 3; j++){
      if(data[i] < data[j]){
        buffer = data[i];
        data[i] = data[j];
        data[j] = buffer;
      }
    }
  }

  printf("%d\n", data[0]);

  return 0;

}