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;
	int b;
	int hasil;
	a >= -1000 ;
	b <= 1000 ;
	scanf("%d",&a);
	scanf("%d",&b);
	hasil = a+b;
	if(hasil<a-b){
		printf("%d",a-b);
	}else if(hasil< a*b){
		printf("%d",a*b);
	}else{
		printf("%d",a+b);
	}
	return 0;
}