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: 1953 - 3854 - 1362 + 6267 - 3664 - 901 + 7969 + 111
Example Output: -2613

Example Input: 3284 - 2372 - 6880
Example Output: 12536

Example Input: 144 + 9714 - 5871 - 1266 + 802
Example Output:
-3235