( 1)
As long as the first round is bye, there will be no 3-team cycle. By drawing lots, 13 team directly advanced to the race, and 6 teams participated in the qualifiers.
Qualifiers, 6 teams, 3 champions, 3 games.
In the first round, 13 team+three qualifying teams drew lots, and the eight winning teams advanced to the second round with eight games.
In the second round and quarter-finals, the eight teams that won in the first round participated in four games.
In the semi-finals, the four teams that won the quarter-finals participated in two competitions.
In the final, the two teams that won the semi-final participated in 1 game.
A *** 18
(2)
If you have enough time, you can have a group match first. 18 team is divided into 6 groups, with 4 teams in the first group and 3 teams in other groups.
Each group is the first to qualify directly, because the first group played 1 game, so the second group of the first group also qualified, and the remaining five groups are the second and the best. The first group match, playing 2 1 game.
The knockout round of the top 8 will be decided by drawing lots, with 1/4 finals, 7 semi-finals and 7 finals each.
A ***28 games.