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: 1137 - 2413 - 5470 - 9797 + 2566
Example Output: 16251

Example Input: 9616 - 8145 + 562 + 3160 - 8906 - 360 + 9291 + 7609 + 460
Example Output: 5945

Example Input: 1024 + 7460 + 6629 + 1175 + 2323 - 264 + 7735 - 904
Example Output:
-23130