instruction:
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:
4117 - 7011 - 9534 - 3901 - 9537 + 6979
answer:
27121


question:
8769 - 3041 - 6567 + 1136 + 3380 + 4191 + 2049 + 7794 - 4291
answer:
4118


question:
2721 + 5538 - 2981 + 3895 - 3249 - 1343 - 9619
answer:

10480