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: 1785 - 7105 - 7217 - 2262 - 9687 - 8283 - 9761 - 7664
Example Output: 53764

Example Input: 1312 - 814 - 8592 - 4040 - 5158 + 6817
Example Output: 13099

Example Input: 8989 - 7853 + 5309 - 346 - 1365 + 2017
Example Output:
11227