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 Python (3.8.2) (judge verdict: Accepted)

# 問題：https://atcoder.jp/contests/abc137/tasks/abc137_a

a, b = map(int, input().strip().split())

if a + b < a - b:
    if a - b < a * b:
        print(a * b)
    else:
        print(a - b)
else:
    if a + b < a * b:
        print(a * b)
    else:
        print(a + b)