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>

int main(int argc, char const *argv[]) {
  int A, B;
  scanf("%d %d", &A, &B);
  if (A + B >= A - B && A + B >= A * B)
    printf("%d", A + B);
  else if (A - B >= A + B && A - B >= A * B)
    printf("%d", A - B);
  else if (A * B >= A + B && A * B >= A - B)
    printf("%d", A * B);
  return 0;
}