Problem:
Score : 100 points

Problem Statement

We have two integers: A and B.

Print the largest number among A + B, A - B, and A \times B.

Constraints

All values in input are integers.

-100 \leq A,\ B \leq 100

Input

Input is given from Standard Input in the following format:

A B

Output

Print the largest number among A + B, A - B, and A \times B.

Sample Input 1

-13 3

Sample Output 1

-10

The largest number among A + B = -10, A - B = -16, and A \times B = -39 is -10.

Sample Input 2

1 -33

Sample Output 2

34

The largest number among A + B = -32, A - B = 34, and A \times B = -33 is 34.

Sample Input 3

13 3

Sample Output 3

39

The largest number among A + B = 16, A - B = 10, and A \times B = 39 is 39.

Solution in C++14 (GCC 5.4.1) (judge verdict: Accepted)

#include <bits/stdc++.h>
using namespace std;

#define pb push_back
#define eb emplace_back
#define mk make_pair
#define fi first
#define se second

typedef long long ll;
typedef pair<int, int> pii;

const int INF = 0x3f3f3f3f;
const int MAXN = 1e5 + 5;

mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

int main() {
	ios::sync_with_stdio(false); cin.tie(NULL);
	ll a, b; cin >> a >> b;
	cout << max({a+b, a-b, a * b}) << '\n';

	

	return 0;
}