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.

6439 - 6685 + 6156 - 3314 + 6845 - 6872
10309

7053 - 797 + 1011 - 43 - 2798 - 1572 - 4498
15750

6869 + 4094 + 1834 + 2268 + 5634 + 7207

-14168