How do 37 people set up the pool table?

The first round 1 person had a bye, 18 games were eliminated, and 19 people entered the next round;

In the second round, 1 person passed by, 9 games were eliminated, and1person entered the next round;

Five games were eliminated in the third round, and five people entered the next round.

In the fourth round of integral competition, there is a single cycle between five people, and the specific scores are high or low.