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,C,D,E;
	-1000<=A;
	B <=1000;
	scanf ("%d", &A);
	scanf ("%d", &B);
	C = A + B;
	D = A - B;
	E = A * B;
	if (C > D && C > E){
		printf ("%d", C);
	} else if ( D > C && D > E){
		printf ("%d", D);
	} else if (E > C && E > D){
		printf ("%d", E);
	} else if (E = D = C) {
	   printf ("0");
	return 0;
}
}