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.

Q: 6570 + 2902 + 9219 - 6971 + 6886 + 765

A: -6231
****
Q: 8974 + 8978 - 8097

A: 8093
****
Q: 5316 + 506 - 8402

A:
13212
****