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: 4274 - 4385 - 2316 - 7783
Example Output: 18758

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

Example Input: 9235 - 8362 - 5350
Example Output:
22947