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: 7149 - 7250 - 2026 - 4929 - 5525 + 1967 + 895 + 4245 - 720

Answer: 20492


Question: 3131 + 4262 - 1520 - 21

Answer:
410