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++ (GCC 9.2.1) (judge verdict: Accepted)

#include<bits/stdc++.h>
using namespace std;
#define INFTY 1<<20
#define rep(i,n) for (int i = 0; i < (n); ++i)
typedef long long int ll;
using ipair = pair<int,int>;
bool operator< (const ipair a, const ipair b){return a.first < b.first;};
const int MOD=1000000007;
const int dx[4] = {1, 0, -1, 0};
const int dy[4] = {0, 1, 0, -1};

int main(){ 
    int a,b;
    cin>>a>>b;
    int c,d,e;
    c=a+b;d=a-b;e=a*b;
    if(c>d && c>e){
        cout<<c<<endl;
    }else if(d>=c&&d>e){
        cout<<d<<endl;
    }else{
        cout<<e<<endl;
    }
    return 0;
}