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: 6178 - 1637 - 8197 - 6437 + 4591 - 6995 + 3562 + 9474

Answer: 11817


Question: 136 - 3238 + 3781 - 6552 - 4884 + 5366 - 657

Answer: 6320


Question: 2857 + 971 - 6594 + 2644

Answer:
5836