class PeekingIterator:
    def __init__(self, iterator):
        """
        Initialize your data structure here.
        :type iterator: Iterator
        """
        self.iterat=iterator
        self.tmp = None
    def peek(self):
        """
        Returns the next element in the iteration without advancing the iterator.
        :rtype: int
        """
 

        if not self.tmp:
            self.tmp=self.iterat.next()
        return self.tmp

    def next(self):
        """
        :rtype: int
        """
        if self.tmp:
            a=self.tmp
            self.tmp=None
            return a
        else:
            return self.iterat.next()

    def
 
 hasNext(self):
        """
        :rtype: bool
        """
        return self.iterat.hasNext() if not self.tmp else True