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,r1,r2,r3;
    scanf("%d %d",&A,&B);

    r1=A+B;
    r2=A-B;
    r3=A*B;

    if(r1>=r2 && r1>=r3)
        printf("The largest number among A + B = %d, A - B = %d, and A \\times B = %d is %d\n",r1,r2,r3,r1);

    if(r2>=r1 && r2>=r3)
        printf("The largest number among A + B = %d, A - B = %d, and A \\times B = %d is %d\n",r1,r2,r3,r2);

    if(r3>=r1 && r3>=r2)
        printf("The largest number among A + B = %d, A - B = %d, and A \\times B = d is d\n",r1,r2,r3,r3);


    return 0;
}