import re
import sys
string = sys.stdin.read()
if bool(re.findall(r'\bdef\b|[^\.]print\b', string)):
    print("Python")
elif bool(re.findall(r"\bpublic\s+class\b|\bpublic\s+static\s+void\s+main\b|\bSystem\.out\.println\b", string)):
    print('Java')
elif bool(re.findall(r'\b#include\b|\bint\s+main\b|\bprintf\b', string)):
    print('C')