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.
--------
Question: 4264 - 4438 + 3871 + 7585 - 540 - 3455 - 6016

Answer: 7257


Question: 8354 + 2602 + 1315

Answer: 4437


Question: 8544 + 676 + 3614 + 3560 + 7787

Answer:
-7093