19 people participated in the table tennis singles competition and won the first place in no more than five games.

In the first paragraph, 9 people were divided into 9 groups, and 9 people were negative+1 person list and revived into 5 people. In the second round 14 people entered 7 groups, in the third round, 3 people entered 3 groups, and 3 negative people were resurrected into 2 people. There are five people left. In the fourth round, two people entered two groups, single, 1.