"""Original hypothesis reconstructed for this practice program only."""
def award_points(tokens, chain, misses):
    if any(type(n) is not int or not 0 <= n <= 999 for n in (tokens, chain, misses)):
        raise ValueError('Practice input domain: three integers 0..999')
    return max(0, min(tokens, 99) * 7 + (50 if chain >= 3 else 0) - misses * 2)