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 (Clang 3.8.0) (judge verdict: Wrong Answer)

#include<stdio.h>

int main(void)
{
  int a;
  int b;
  int c;
  int d;
  int e;
  
  scanf("%d", &a);
  scanf("%d", &b);
  
  c = a + b;
  d = a - b;
  e = a * b;
  
  if(c > d && c > e){
    printf("%d", c);
  }else  if(d > c && d > e){
    printf("%d", d);
  }else{
    printf("%d", e);
  }
  return 0;
}