

snake_case_        =			{
    "km/h": 1.0,
    "m/s": 3.6,
    "mph": 1.60_9344,
    "knot": 1.852,
}

snake_case_        =			{
    "km/h": 1.0,
    "m/s": 0.2_7777_7778,
    "mph": 0.6_2137_1192,
    "knot": 0.5_3995_6803,
}

def      snake_case__      (   SCREAMING_SNAKE_CASE_		:   float     ,					SCREAMING_SNAKE_CASE_		:   str     ,					SCREAMING_SNAKE_CASE_		:   str      ):



     '''simple docstring'''





     if unit_to not in speed_chart or unit_from not in speed_chart_inverse:
          lowercase__   :       Union[str, Any]				=	(
              f"""Incorrect 'from_type' or 'to_type' value: {unit_from!r}, {unit_to!r}\n"""
              f"""Valid values are: {", ".join(SCREAMING_SNAKE_CASE_      )}"""
          )
          raise ValueError(SCREAMING_SNAKE_CASE_      )
     return round(speed * speed_chart[unit_from] * speed_chart_inverse[unit_to]     ,					3      )


if __name__ == "__main__":
       import doctest

       doctest.testmod()




import math
import sys

def      snake_case__      (   SCREAMING_SNAKE_CASE_		:   int      ):



     '''simple docstring'''





     if number != int(SCREAMING_SNAKE_CASE_      ):
          raise ValueError('the value of input must be a natural number'      )
     if number < 0:
          raise ValueError('the value of input must not be a negative number'      )
     if number == 0:
          return 1
     lowercase__   :       Tuple				=	[-1] * (number + 1)
     lowercase__   :       Tuple				=	0
     for i in range(1     ,					number + 1      ):
          lowercase__   :       Tuple				=	sys.maxsize
          lowercase__   :       str				=	int(math.sqrt(SCREAMING_SNAKE_CASE_      )      )
          for j in range(1     ,					root + 1      ):
               lowercase__   :       List[Any]				=	1 + answers[i - (j**2)]
               lowercase__   :       str				=	min(SCREAMING_SNAKE_CASE_     ,					SCREAMING_SNAKE_CASE_      )
          lowercase__   :       List[str]				=	answer
     return answers[number]


if __name__ == "__main__":
       import doctest

       doctest.testmod()

