#!/usr/bin/env python3.4

import sys
s = sys.stdin.read()

# set of words converted to lowercase lowercase
answer = set(re.findall(r'[\w]+', s.lower()))

# correct set of colors
rgb_colors = set(['red', 'green', 'blue'])

if answer == rgb_colors:
    print(1.0)
else:
    print(0.0)
exit(0)