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>

int main() {
  int A, B;
  scanf("%d %d", &A, &B);
  int ADD = A+B;
  int SUB = A-B;
  int MLT = A*B;
  
  if (MLT >= ADD) {
    if (ADD >= SUB)
    	printf("%d", MLT);
  	else if (MLT >= SUB)
        printf("%d", SUB);
  } else if (ADD >= SUB) {
    if (SUB >= MLT)
    	printf("%d", MLT);
  	else if (ADD >= MLT)
        printf("%d", ADD);
  } else if (SUB >= MLT) {
    if (MLT >= ADD)
    	printf("%d", MLT);
  	else if (SUB >= ADD)
        printf("%d", MLT);
  }
  
  return 0;
}