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@@ -214,4 +214,22 @@ def find_outlier(integers):
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def validate_pin(pin):
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return len(pin) in (4, 6) and pin.isdigit()
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+def binary_array_to_number(arr):
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+ return int(''.join(str(_) for _ in arr), 2)
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+def litres(time):
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+ return int(time*0.5//1)
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