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 Java8 (OpenJDK 1.8.0) (judge verdict: Runtime Error)

import java.util.Arrays;
import java.util.HashMap;
import java.util.Scanner;

public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        HashMap<String,Long> map =  new HashMap<>();
        
        for(int i = 0; i < a; i++){
            String s = sc.next();
            char[] c = s.toCharArray();
            Arrays.sort(c);
            s = new String(c);
            if(map.containsKey(s)){
                map.put(s, map.get(s) + 1);
            }else{
                map.put(s, (long)1);
            }
        }

        long count = 0;
        for(Long l: map.values()){
            count = count + (l * (l -1) / 2);
        }
        
        System.out.print(count);
    }
}