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 Java8 (OpenJDK 1.8.0) (judge verdict: Accepted)


import java.util.Scanner;

// ABC098 at 2018/05/26

public class Main {
    public static void main(String[] args) {
        Main main = new Main();
        main.solveA();
    }

    private void solveA() {
        Scanner sc = new Scanner(System.in);
        int A = sc.nextInt();
        int B = sc.nextInt();
        int ans = A + B;
        if (ans < A - B) {
            ans = A - B;
        }
        if (ans < A * B) {
            ans = A * B;
        }
        System.out.println(ans);
    }

    private void solveB() {
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        System.out.println(N);
    }

    private void solveC() {
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        System.out.println(N);
    }

    private void solveD() {
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        System.out.println(N);
    }

    private void solveE() {
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        System.out.println(N);
    }

    private void solveF() {
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        System.out.println(N);
    }

}