Problem:
Score : 100 points

Problem Statement

You are given two integers A and B.
Find the largest value among A+B, A-B and A \times B.

Constraints

-1000 \leq A,B \leq 1000

All values in input are integers.

Input

Input is given from Standard Input in the following format:

A B

Output

Print the largest value among A+B, A-B and A \times B.

Sample Input 1

3 1

Sample Output 1

4

3+1=4, 3-1=2 and 3 \times 1=3. The largest among them is 4.

Sample Input 2

4 -2

Sample Output 2

6

The largest is 4 - (-2) = 6.

Sample Input 3

0 0

Sample Output 3

0

Solution in C (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 && a+b > a*b){
  	
  printf("%d\n",a+b);
  
  } else if(a*b > a+b && a*b > a-b){
  	
  printf("%d\n",a*b);
  
  } else {
  
  printf("%d\n",a-b);
  
  }
  
  return 0;

}