text: #sqroot floored
  def sqroot(x):
       for i in range(x):
           if i**==x:
               return i
        elif i>x:
            return i
      return i
  
  
  def count4(input):
       s=[ x for x in input if x=="4"] 
       return len(s)
  
  def unique(input):
      if input is string:
          for i in range len(input):
              i.pop():
                  if i in input:
                      return False
  