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: Wrong Answer)

#include <stdio.h>

int main(){
  
  int A,B;
  
  scanf("%d %d", &A,&B);
  
  int C,D,F;
  
  C = A + B;
  D = A - B;
  F = A * B;
  
  if(C>D){
    if(C>F){
      printf("%d",C);
    }
    if(F>C){
      if(F>D){
        printf("%d",F);
      }
    }
  }
  if(D>C){
    if(D>F){
      printf("%d",D);
    }
    if(F>D){
      printf("%d",F);
    }
  }
  return 0;
}