There are 28 basketball teams in four venues, and the competition time is 12:00- 1:30, 5:00-6:30, and the champion and runner-up are decided within five days.

First of all, a ***4 venue is divided into 1.5 hours in the afternoon every day (1.5 hours at most). Then play at most 8 games a day, 40 games in 5 days. That depends on the competition system. Considering there are only five days, so few games and so many teams. We can only use the elimination system. Whether it is a single cycle or a combination of cycle and elimination, time and times are not enough. Then let's see how the competition system is set up.

The first round of lottery grouping. Twenty-eight teams directly began to be eliminated in a single game, that is, they were divided into 14 groups and 14 teams were eliminated in the first round. That is, there will be 14 games in the first round. It will be finished in two days.

In the second round, the remaining 14 teams were eliminated in 7 groups by lottery, and 7 teams were eliminated, playing 7 games a day.

There are 7 teams left in the third round and 2 days left. Or draw lots to be eliminated in groups. But there are only seven teams, so a direct promotion sign will be set when drawing lots, and if you are lucky, you will be promoted directly (after all, luck is also a sign of strength).

The other six teams played three knockout matches in three groups and ended on the morning of the fourth day. The remaining three teams plus the lucky team will be eliminated in a single game. There will be two games, which will end in the afternoon of the fourth day (at this time, the physical fitness of the three teams playing in the morning will be tested).

In the final, by the afternoon of the fourth day, there were only two teams left. The two teams will decide the third place in the fifth morning. (The title only says that the winner will be the third runner-up. See the picture below for details. I drew a competition form. ?

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