def lateralsuface_cylinder(r,h):
  
  lateralsurface= 2*3.1415*r*h
  return lateralsurface
def is_not_prime(n):
    import math
    
    result = False
    for i in range(2,int(math.sqrt(n)) + 1):
        if n % i == 0:
            result = True
    return result