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;
	scanf("%d", &A);
	scanf("%d", &B);
	if(A >= -100 && B >= -100 && 100>= A  && 100>=B &&(A+B) >= (A*B) && (A+B)>=(A-B))
	{printf("%d", A+B);}
    else if(A >= -100 && B >= -100 && 100>= A  && 100>=B && (A-B)>=(A+B) && (A-B)>=(A*B))
	{printf("%d", A-B);}
    else if(A >= -100 && B >= -100 && 100>= A  && 100>=B && (A*B)>=(A+B) && (A*B)>=(A-B))
    {printf("%d", A*B);}
    else {printf("error");}
    return 0;
}