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++14 (GCC 5.4.1) (judge verdict: Wrong Answer)

#include<iostream>
#include<algorithm>
#include<stdlib.h>
#include<math.h>
using namespace std;
 
 
int main() {
	float a, b;
	cin >> a >> b ;
	if (a == 0 && b == 0) {
		cout << 0 << endl;
	}
	
		else if (a / b + 1 < a&&a / b - 1 < a&&b>0) {
			cout << a * b << endl;
		}
		else if (a / b + 1 > a&&b > 0) {
			cout << a + b << endl;
		}
		else {
			cout << a - b << endl;
		}


	
	

	system("pause");
}