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: 7581 + 8916 + 7584 + 7731

Answer: -16650


Question: 4195 + 6940 - 1053 - 4433 + 1540

Answer: 1201


Question: 9921 - 7307 + 2744 + 5373 - 4720

Answer:
13831