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: 2596 + 8164 - 6385 + 6704
Example Output: -5887

Example Input: 6120 - 9271 - 7167 + 6916 - 2510 + 7854 - 7909 - 1960 - 3775
Example Output: 23942

Example Input: 5103 + 1644 + 769 - 5567 - 7683 + 3869 + 2825
Example Output:
9246