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: 5394 + 9787 - 7151 - 4774 - 6995 + 6101 - 1317

Output: 9743


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

Output: 19536


Input: Consider Input: 1216 - 4176 + 374


Output: 5018