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: 8602 - 1293 - 8063 - 4529 + 453 - 6407
Example Output: 28441

Example Input: 3123 + 9519 - 2864 + 9440 - 756 + 252
Example Output: -12468

Example Input: 5197 + 938 - 6536 - 6519 - 7090 - 7965 - 9656 - 5269
Example Output:
47294