4 1 person can bye bye. In the first round, 23 players were selected by lottery, and the remaining 18 players were eliminated in a lose-lose tournament. In the end, nine players advanced. In the second round, these 9 players and 23 players in the first round formed the top 32. It'll work out.
Twenty-six people is easy, and so is bye-bye. Six bye players were drawn by lot. The remaining 20 people will be eliminated, and 10 people will advance. This 10 person, plus the six people who were vacant in the first round, constitutes the top of 16.