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

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

Example Input: 7729 - 7280 + 5072 + 3806 - 6060
Example Output:
12191