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#!/usr/bin/env python3

import sys
from portage.dep import Atom
from portage.exception import InvalidAtom

for line in sys.stdin.buffer:
    try:
        Atom(line.decode().strip())
        sys.stdout.buffer.write(b"0\n")
    except InvalidAtom:
        sys.stdout.buffer.write(b"1\n")
    finally:
        sys.stdout.buffer.flush()