# coding=utf-8
# inorderbl.py
import stdininput
def inorder(arrays,arraysize,currentp):
if(2*currentp+1
print arrays[currentp]
if(2*currentp+2
if __name__=='__main__':
stdininput.stdininput()
inorder(stdininput.intsortarrays,len(stdininput.intsortarrays),0)