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(){
                  int a,b;
                  if(scanf("%d",&a)==1&&scanf("%d",&b)==1){
                    int tmp;
                    int A=a+b,B=a-b,C=a*b;
                    if(A>=B&&A>=C) tmp = A;
                    if(B>=A&&B>=C) tmp = B;
                    if(C>=A&&C>=B) tmp = C;
                    printf("%d",tmp);
                  }
                  else  {
            printf("Failed to read integer.\n");
        }
                  return 0;
                  }