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(void)
{
  int a, b, wa, sa, seki;
  int i;
  scanf("%d %d", &a, &b);
  
  wa = a + b;
  sa = a - b;
  seki = a * b;
  i = wa;
  
  if(wa < sa){
    i = sa;
    if(sa < seki){
      i = seki;
    }
  }
  else if(wa < seki){
    i = seki;
    if(seki < sa){
      i = sa;
    }
  }
  
  printf("%d", i);
  
  return 0;
}