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: 2673 - 123 - 5121 + 7601 + 976 + 4369 - 4232
Example Output: -797

Example Input: 2432 + 588 - 6240 + 8670
Example Output: -586

Example Input: 9 - 4085 - 509 - 1292
Example Output:
5895