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: 3385 - 6152 + 1565 - 9813 - 5112 - 2865 + 2979
Example Output: 22783

Example Input: 6738 - 471 + 8724
Example Output: -1515

Example Input: 5984 - 81 + 1371 + 1224 + 9698 - 7251 + 9688
Example Output:
-8665