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: 1928 - 8869 + 937 + 6209 + 5391 - 5357 + 6743
Example Output: -3126

Example Input: 4303 + 4581 + 3027 - 9269 + 3325
Example Output: 2639

Example Input: 9508 - 8632 - 4640 + 3821 + 2186 - 8594
Example Output:
25367