def check_isosceles(x,y,z):
  
  if x==y or y==z or z==x:
	   return True
  else:
     return False
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