* * * Badminton competition has 15 participants, and the competition adopts the single elimination system. Please calculate the total number of matches and the number of matches through the calculatio

* * * Badminton competition has 15 participants, and the competition adopts the single elimination system. Please calculate the total number of matches and the number of matches through the calculation formula, and arrange the matching table. The competition is divided into the first half, 8 players in the first half and 7 players in the second half. Players draw lots as follows: No.65438 +0 Tono. 15, 4 games in the first round in the upper half, 3 factories in the lower half, 15, 2 games in the first round, 2 games in the upper half and 2 games in the lower half. The top four can be determined by a small cycle.