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 debug(var) cout << #var << ": " << var << endl;
#define rep(i, N) for(int (i) = 0; (i) < (N); (i)++)
using ll = long long;
using ull = unsigned long long;
using vvint = vector<vector<int>>;
constexpr ll mod = 1e9 + 7;

int main() {

  int A, B; cin >> A >> B;
  cout << max(A + B, max(A - B, A * B));

  return 0;
}