def main():
try:
opts = {1,2,3}
except:
pass
for opt in opts:
print( opt )
main()
ZGVmIG1haW4oKToKICAgIHRyeToKICAgICAgICBvcHRzID0gezEsMiwzfQogICAgZXhjZXB0OgogICAgICAgIHBhc3MKICAgIGZvciBvcHQgaW4gb3B0czoKICAgICAgICBwcmludCggb3B0ICkKICAgICAgICAKbWFpbigp