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: 5979 - 9772 + 7332
Example Output: 8419

Example Input: 7312 - 1598 - 5813 - 8994 + 9174 - 4767 + 4076
Example Output: 15234

Example Input: 3122 + 1643 + 1382
Example Output:
97