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: 178 + 5236 - 8372 - 6825 + 1044 - 7818 - 4765 + 7418
Example Output: 14260

Example Input: 5335 + 8307 + 4845 + 6853 - 9847 + 7289
Example Output: -12112

Example Input: 693 - 4045 - 1737 - 6479 - 3281 + 7556
Example Output:
8679