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.
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Question: 1137 - 2413 - 5470 - 9797 + 2566

Answer: 16251


Question: 7457 - 9732 + 1691 + 2450 + 16 + 1610 + 1729

Answer: 9693


Question: 8928 - 3471 - 6612 + 9780 + 2171 - 4858

Answer:
11918