main.py

import sys


def solve(data: str) -> str:
    tokens = data.split()
    if not tokens:
        return ""
    it = iter(tokens)
    n = int(next(it))
    entries = []
    total = 0.0
    for _ in range(n):
        name = next(it)
        art = int(next(it))
        practice = int(next(it))
        display = int(next(it))
        score = art * 0.5 + practice * 0.3 + display * 0.2
        total += score
        entries.append((name, practice, score))
    entries.sort(key=lambda item: (-item[2], -item[1], item[0]))
    champion = entries[0]
    ranking = ",".join(name for name, _, _ in entries)
    average = total / n
    return "\n".join(
        [
            f"champion={champion[0]} {champion[2]:.2f}",
            f"average={average:.2f}",
            f"ranking={ranking}",
        ]
    )


if __name__ == "__main__":
    sys.stdout.write(solve(sys.stdin.read()).strip())
    sys.stdout.write("\n")