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 json
n = int(input())
S = list()

A = list()
for _ in range(n):
  S.append(input())

for i in range(len(S)):
  hash = dict()
  for a in range(len(S)):
    for b in range(len(S[i])):
      hash[S[a][b]] = 0
  for j in range(len(S[i])):
    
    hash[S[i][j]] += 1
    
  A.append(hash)
  
count = 0

unique_list = list(map(json.loads, set(map(json.dumps, A))))
ans = len(A)-len(unique_list)
print(ans)