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: 4725 - 7780 + 1028 - 6858 + 9194 + 4680 - 3421 + 362 - 8573
Example Output: 16093

Example Input: 1592 + 7031 - 1902 + 5922 - 1351 + 8340 - 2032
Example Output: -14416

Example Input: 972 - 3506 + 872 + 6070 + 6964 - 8581 - 3642 - 252 + 9373
Example Output:
-6326