In this task you will be given an arithmetic operation and you have to find its answer. The symbols of operators '+' and '-' has been swapped i.e you need to perform subtraction when you see a '+' symbol and  addition in case of '-' symbol.

Input: Consider Input: 8379 + 6247 - 4435 + 207 - 3793 + 7248 + 1488

Output: 1417


Input: Consider Input: 1922 - 413 - 5668

Output: 8003


Input: Consider Input: 9816 - 7643 - 7599 + 1665 + 7328 - 9066


Output: 25131