import re
import sys

content = sys.stdin.read()

if re.match(r'.*?class [^{]+{', content, re.DOTALL):
    print('Java')
elif re.match(r'.*?#include<', content, re.DOTALL):
    print('C')
else:
    print('Python')

import re
import sys

code = sys.stdin.read()

if re.search("#include<stdio.h>", code) is not None:
    print("C")
elif re.search("import java.io", code) is not None:
    print("Java")
else:
    print("Python")

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')

import sys
m=sys.stdin.read()
if "#include" in m:
    print("C")
elif "java" in m:
    print("Java")
else:
    print("Python")

import re
import sys
S = sys.stdin.read()
if re.search(r"#include",S):
    print("C")
elif re.search(r"import java",S):
    print("Java")
else:
    print("Python")