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: 3254 - 200 + 4450 - 6393 - 2480 + 4564 + 9650
Example Output: -6337

Example Input: 1470 + 1395 + 3788 + 7517 + 2388 - 431 - 2393 + 4241 - 560
Example Output: -14475

Example Input: 6067 + 2051 + 8510 + 3059 + 726 + 3389
Example Output:
-11668