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 main()
{
  int a, b, x, y, z;
  
  if( scanf("%d", &a) == 1);
  if( scanf("%d", &b) == 1);
  
  x = a + b;
  y = a - b;
  z = a * b;
  
  if(x>=y)
   if(x>=z)
     printf("%d", x);
  if(y>x)
   if(y>=z)
     printf("%d", y);
  if(z>x)
   if(z>y)
     printf("%d", z);
  
  return 0;
}