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++14 (GCC 5.4.1) (judge verdict: Accepted)

#include <stdio.h>
int main(void){
  int a, b;
  scanf("%d %d", &a, &b);
  if(a + b > a - b){
    if(a + b > a * b){
      printf("%d\n", a + b);
    }else{
      printf("%d\n", a * b);
    }
  }else{
    if(a - b > a * b){
      printf("%d\n", a - b);
    }else{
      printf("%d\n", a * b);
    }
  }
  return 0;
}