Ashfak’s Iphone

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If Ashfak's iphone battery is $0-20 $% then it gives 9 minutes per 1% backup on standby (on zero it gives zero minutes backup) and $20-90 $% it gives 6 minutes per 1% backup on standby and $90-100 $% 3 minutes per 1% backup on standby. Suppose iphone is in standby mode by default. Now find the backup of iphone in hours and minutes for a given percentage of battery $N$ of iphone. ###INPUT - F

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solution.cppC++17

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