main.py

import sys


def solve(data: str) -> str:
    tokens = data.split()
    if not tokens:
        return ""
    it = iter(tokens)
    n = int(next(it))
    stock = {}
    turnover = 0
    first_error = 0
    for line_no in range(1, n + 1):
        name = next(it)
        op = next(it)
        qty = int(next(it))
        price = int(next(it))
        current = stock.get(name, 0)
        if op == "IN":
            stock[name] = current + qty
            continue
        if qty > current:
            if first_error == 0:
                first_error = line_no
            continue
        stock[name] = current - qty
        turnover += qty * price
    remain = [f"{name}:{stock[name]}" for name in sorted(stock) if stock[name] > 0]
    stock_text = ",".join(remain) if remain else "EMPTY"
    return "\n".join(
        [
            f"turnover={turnover}",
            f"first_error={first_error}",
            f"stock={stock_text}",
        ]
    )


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