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: Accepted)

#include <stdio.h>
#include <stdlib.h>
#include <math.h>

int main()
{
    long long int A, B, soma, sub, mult;
    scanf("%lld %lld", &A, &B);
    soma = A + B;
    sub = A - B;
    mult = A * B;
    if(soma >= sub && soma >= mult)
        printf("%lld\n", soma);
    else if(sub >= soma && sub >= mult)
        printf("%lld\n", sub);
    else
        printf("%lld\n", mult);
}