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.

496 + 5072 + 6259 + 1493 + 4824 + 2052 + 4751 - 8038
-15917

4101 + 2536 - 502
2067

7064 - 4649 - 3216 + 6118 + 5542 + 8750 - 6801

1320