#!/usr/bin/env python
#coding=utf-8
# inorderBL.py
import stdinInput
def inorder(arrays,arraysize,currentP):
if(2*currentP+1< arraysize):
inorder(arrays,arraysize,2*currentP+1)
print arrays[currentP]
if(2*currentP+2 inorder(arrays,arraysize,2*currentP+2) ) if __name__=='__main__': stdinInput.stdinInput() inorder(stdinInput.intsortArrays,len(stdinInput.intsortArrays),0)