How to arrange the table tennis match schedule for 48 people?

Because the number of places in the first round of elimination must be a power of 2, the position of 16 is adopted in the women's singles. For the two extra positions, when drawing lots, just remove No.2 and 15, and draw lots for the remaining 14. Fix a table as a female table, then fight, and the winner will enter the next round. Referring to the pictures I uploaded, from top to bottom, the first scene should be No.3 ~ No.4 ...1No.3 ~1No.4; The first game of the second round should be the winner of 1 ~ 3 and 4.

There are 32 places for men, but what if there are two places left? Divide No.2 into 2A and 2b; Divide 3 1 into 3 1A,

3 1B； In this way, there are 34 lots. After the athletes' positions are determined by lots, the game can begin. The first round is a pre-selection (also called number grabbing) competition, which is played on two tables at the same time. The first game is 2A ~ 2B, and the winner enters 2.

The location of. The other game is 3 1A ~ 3 1B, and the winner enters 3 1. After these two games, the game can be played.

From top to bottom, 1 ~ 2, 3 ~ 4, ... 3 1 ~ 32, the winner enters the next round.