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.

7555 + 8285 + 7132 + 9363 - 3515
-13710

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

2653 + 9718 - 3237 + 2973 - 6895 - 18
112