lesson5_17_ear_2

# -*- coding: utf-8 -*-
"""
Complex conditions
@authors: katkaranikola stkarlos
"""

a = float(raw_input('dose to a: '))
b = float(raw_input('dose to b: '))
c = float(raw_input('dose to c: '))


if ( (a**2 == b**2 + c**2) or (b**2 == a**2 + c**2) or (c**2 == b**2 + a**2) ):
  print "othogonio"
else:
  print "oxi orthogonio"