

def 	__a     (      A__			:  list[int]			,  A__			:  list[int]			,  A__			:  int       ):
    return not any(
        neighbour == 1 and colored_vertices[i] == color
        for i, neighbour in enumerate(A__       )       )





def 	__a     (      A__			:  list[list[int]]			,  A__			:  int			,  A__			:  list[int]			,  A__			:  int       ):

    # Base Case
    if index == len(A__       ):
        return True

    # Recursive Step
    for i in range(A__       ):
        if valid_coloring(graph[index]			,  A__			,  A__       ):
            # Color current vertex
            SCREAMING_SNAKE_CASE										=   i
            # Validate coloring
            if util_color(A__			,  A__			,  A__			,  index + 1       ):
                return True
            # Backtrack
            SCREAMING_SNAKE_CASE										=   -1
    return False





def 	__a     (      A__			:  list[list[int]]			,  A__			:  int       ):
    SCREAMING_SNAKE_CASE										=   [-1] * len(A__       )

    if util_color(A__			,  A__			,  A__			,  0       ):
        return colored_vertices

    return []


def 	__a     (      A__			:  float			,  A__			:  float       ):
    if mass < 0:
        raise ValueError("The mass of a body cannot be negative"       )
    return 0.5 * mass * abs(A__       ) * abs(A__       )


if __name__ == "__main__":
    import doctest

    doctest.testmod(verbose=True)