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.

3709 + 206 - 4363 + 3129 + 2506
2231

3089 - 6778 - 3604 - 1052 - 1332
15855

2653 + 9718 - 3237 + 2973 - 6895 - 18

112