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: 6927 - 2357 + 8911 - 4674 - 2728 + 9726 - 1304 - 3277
Example Output: 2630

Example Input: 2045 - 2088 - 8387 + 5185 + 2275 - 1337 - 2494 - 1644 + 9737
Example Output: 798

Example Input: 5367 - 7512 + 4639 - 8642 - 3450
Example Output:
20332