Will it flower

A list gives six days of light and dark. Each has a kind of plant, the hours of light, and whether a flash breaks the night. You will work out the dark periods, write a function that tells whether a plant flowers, and count the flowering cases.

The idea. A plant measures its unbroken dark period. A short-day plant flowers when the dark is at least the critical dark period and is not broken. A long-day plant flowers when the dark is shorter than that, or is broken by a flash.

Your tasks.

1. Set dark_periods to the dark period of each day, in the order of the list.
2. Finish flowers. It tells whether a plant of this kind flowers.
3. Set count to the number of days in the list that make the plant flower.