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: 758 + 1664 + 5481 - 1654 - 1804 + 5232 - 9130
Example Output: 969

Example Input: 9776 + 5760 + 5961 - 1401 - 1368
Example Output: 824

Example Input: 2999 - 3603 + 4585 - 9618
Example Output:
11635