I understand the problem but not the tests
It seems like the water content halves every ~69 minutes. But the first sentence about 100% and 100 minutes are very confusing. If it is exponential decay, then water should never reach 0.
Is the Point in a Circle?
Justify the character string in center with proportional fonts
Return 'on' or 'off'
matrix of natural number
Vectorizing, too easy or too hard?
Minimum possible M of the maximum side of a triangle of given area A.
How to subtract?
Multiply a column by a row
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