There are 12 people in the badminton men's singles competition. How to arrange the competition system? Good answer, extra points ~

Group circulation system, divided into three groups, each group of 4 people. Four people in each group compete in a round robin, that is, every two people compete. In the end, the two players who won the most games entered the next round and won with a small score in the case of the same big score. When the small wins are the same, it is better than the small scores. After the first round, six people entered the next round. The second round was eliminated by direct lottery. The three eliminated players will compete in the resurrection round robin, and the winner will advance to the semi-finals and compete with the top three players for the third place in the championship. The previous method is a little more complicated. Each player can play a few more games. If you want to keep it simple, you can eliminate the tournament directly from the beginning. Six winners are in the knockout stage. The three eliminated players will have a round robin, and the winner will enter the semi-final and compete for the third place in the knockout.