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 (3.4.3) (judge verdict: Runtime Error)

str = input().split()
plus = str[0] + str[1]
minus = str[0] - str[1]
mul = str[0] * str[1]
if(plus > minus):
  if(plus > mul):
    max = plus
  else:
    max = mul
if(minus > plus):
  if(minus > mul):
    max = minus
  else:
    max = mul
if(plus > minus):
  if(plus > mul):
    max = plus
  else:
    max = mul