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: 4274 - 4385 - 2316 - 7783
Example Output: 18758

Example Input: 1561 - 5861 - 6887 - 8406 - 5941 - 3633
Example Output: 32289

Example Input: 7618 + 1641 + 2217 - 8853 - 7501 + 1888
Example Output:
18226