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)

import sys

N = int(input())
L = []
for i in range(N):
    L.append(sorted(sys.stdin.readline().strip()))

Sum = 0
for i in range(N):
    if i == N - 1:
        break
    
    for j in range(i+1, N):
        if L[i] == L[j]:
            Sum += 1

print(Sum)