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: 1540 + 6977 + 9400 - 5524 - 1970 + 8397 - 6006 + 3183

Answer: -12917


Question: 5709 + 8211 + 3945 + 1143 - 7258

Answer: -332


Question: 6422 + 8216 + 9957 - 1637 - 4177

Answer:
-5937