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.

[EX Q]: 1231 + 6657 - 8263
[EX A]: 2837

[EX Q]: 8849 + 869 + 880 + 8843 + 8122
[EX A]: -9865

[EX Q]: 1233 - 4579 - 1707 - 3445 + 274 - 2996 - 9772 + 5484 - 3565
[EX A]:
21539