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