Failed to draw lots: a team needs to fail, and the failed team will advance directly. The other two teams competed with each other, and the third place lost. The final between the winner and the loser. The winner is the first, and the loser is the second.
Take turns to draw lots: draw lots to decide the two teams in the first game, and then play. The winner advanced to the championship and runner-up finals, and the loser and loser participated in the second round. In the second round, the winner advanced and the loser was third. The winner of the last two teams will play in the final. The winner won the championship first, and the loser won the second place.