Problem:
Score : 100 points

Problem Statement

You are given two integers A and B.
Find the largest value among A+B, A-B and A \times B.

Constraints

-1000 \leq A,B \leq 1000

All values in input are integers.

Input

Input is given from Standard Input in the following format:

A B

Output

Print the largest value among A+B, A-B and A \times B.

Sample Input 1

3 1

Sample Output 1

4

3+1=4, 3-1=2 and 3 \times 1=3. The largest among them is 4.

Sample Input 2

4 -2

Sample Output 2

6

The largest is 4 - (-2) = 6.

Sample Input 3

0 0

Sample Output 3

0

Solution in C (GCC 5.4.1) (judge verdict: Wrong Answer)

#include<stdio.h>
#include<math.h>
int main()
{
    int A, B, r, r1, r2;
    printf("Input value of A & B:");
    scanf("%d %d", &A, &B);

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

    if(r>r1 && r>r2){
        printf("%d\n", r);
    }

    else if(r1>r && r1>r2){
        printf("%d\n", r1);
    }
    else
        printf("%d\n", r2);

    printf(" %d+%d=%d,%d-%d=%d and %d*%d=%d \n",A, B,A+B,A, B,A-B,A, B,A*B);
    return 0;

}