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.

Example Input: 2036 + 7313 - 8908 - 1870 - 5159 + 5945 + 5006 + 635 + 5551
Example Output: -6477

Example Input: 3881 + 3747 + 6493 - 7538
Example Output: 1179

Example Input: 6911 - 793 - 8330 + 6169 + 4695 + 2681 + 797 + 1080
Example Output:
612