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: 8967 + 529 - 1163 - 2651 + 7174 - 2929
Example Output: 8007

Example Input: 4515 - 2156 - 8427 - 2175
Example Output: 17273

Example Input: 9884 + 3516 - 611 - 1425 + 2351
Example Output:
6053