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: 7403 - 3327 + 5889 + 1034 + 1607 - 313
Example Output: 2513

Example Input: 6054 - 4121 + 5615
Example Output: 4560

Example Input: 649 - 6050 - 7454 + 907 - 9668
Example Output:
22914