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.

2510 - 5839 + 9950 + 740
-2341

812 + 6106 - 2904 + 7738 + 7655 - 6987
-10796

5390 - 4927 + 443 - 8323 + 90

18107