# -*- coding: utf-8 -*-
"""
@author: geokoutsiouri katkaranikola stkarlos
iparksi orthogoniou trigonou
"""
a = float(raw_input('dose pleura a ') )
b = float(raw_input('dose pleura b ') )
c = float(raw_input('dose pleura c ') )
if (a**2 == b**2 + c**2) or (b**2 == a**2 + c**2) or (c**2 == a**2 + b**2):
print 'sximatizetai orth. trig'
else:
print 'oxi'