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: 875 + 1299 - 1721 - 4432 - 7136 - 2468

Output: 15333


Input: Consider Input: 5342 - 6456 - 9929 + 3119 - 1242 + 314

Output: 19536


Input: Consider Input: 5624 - 1731 - 3661 + 3211 + 7724


Output: 81