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: Accepted)

#include<stdio.h>
int max(int x,int y);

int main(void)
{
  int A,B;
  scanf("%d",&A);
  scanf("%d",&B);
  
  printf("%d",max(A,B));
  
  return 0;
}

int max(int x,int y)
{
  int m;
  
  if((x-y)>=(x+y)){
    if((x-y)>=(x*y)){
      m = x-y;
    }
    else if((x-y)<(x*y)){
      m = x*y;
  }
  }
  else{
    if((x+y)>=(x*y)){
      m = x+y;
    }
    
    else if((x+y)<(x*y)){
      m = x*y;
    }
  }
    
    return m;
  }