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 (Clang 3.8.0) (judge verdict: Wrong Answer)

#include <stdio.h>

int main(){
    int a, b, mul, add, sub;

    scanf("%d %d", &a, &b);

    add = a + b;
    sub = a - b;
    mul = a * b;

    if(add > sub && add > mul){
        printf("%d\n", add);
    }
    if(sub > add && sub > mul){
        printf("%d\n", sub);
    }
    if(mul > sub && mul > add)
        printf("%d\n", mul);

    return 0;
}