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)

N = int(input())

s = []
for i in range(N):
    s.append(''.join(sorted(input())))

s = sorted(s)

tmp_count = 1
count = 0
for i in range(0, len(s)-1):
    if s[i] == s[i+1]:
        tmp_count += 1
    else:
        count += tmp_count * (tmp_count - 1) // 2
        tmp_count = 1
count += tmp_count * (tmp_count - 1) // 2
print(count)