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: 4101 + 2536 - 502
Example Output: 2067

Example Input: 9990 - 8613 - 152 + 4529
Example Output: 14226

Example Input: 4620 + 1620 - 847 + 6070 + 7190 + 9987 + 2002
Example Output:
-21402