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]: 42 + 6517 - 146 + 304 - 4759 + 148 - 3822
[EX A]: 1800

[EX Q]: 306 + 2346 - 7752 + 7173
[EX A]: -1461

[EX Q]: 4981 + 601 - 8732 - 4645
[EX A]:
17757