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: 4095 - 9640 - 5113 - 9355
Example Output: 28203

Example Input: 2297 + 4208 + 9691 - 6995 + 738 + 1245 - 7806
Example Output: 1216

Example Input: 8064 - 2692 - 1912
Example Output:
12668