Then they can only be divided into four groups: A, B, C and D, with 9 people in each group. How do 36 people get in?
Join various groups? This can't be decided at will, we have to draw lots to decide. Note that when drawing lots,
Athletes from the same unit (department) should not be put in the same group as far as possible. (But the same.
There are many people in the unit. If there are four groups and five people in the department, there is no way out.
Nine people will take part in a round robin. As the number of people is odd, 0 will be regarded as an even number according to the regulations. 0.
Goodbye. The fixed counterclockwise rotation of "1" is adopted to determine the competition order of the round robin.
first inning
1——0
2——9
3——8
4——7
5——6
Second round
1——9
0——8
2——7
3——6
4——5
This rotation, until the ninth round. All competitors have competed with each other.
Round robin is ranked according to the players' points. 2 points for winning an opponent and 2 points for losing a pair.
Hand gain 1 min.
When the points of two players are the same, it is decided according to the result of the game between them. The winner comes first.
If three players have the same points and form a series (A wins B, B wins C, and C wins A), even if.
Calculate the proportion of three people winning or losing the game, and the one with a large proportion ranks first.
For example, A 3: 0 wins B; B wins c 3: 0; C beat A 3-2.
The winning-losing ratio of A is (3+2) ÷ 3 = 1.66.
The winning-losing ratio of B is: (3+0) ÷ 3 = 1.
The winning ratio of C is: 3 ÷ (3+2) = 0.6.
1.66 > 1 > 0.6 so the ranking should be a, b and c in turn.
If you can't decide the ranking of the group, you must put all A's together to calculate the ratio of winning and losing points.
Partial victory score ÷ all failure scores; B took all the winners and all the losers;
C is the same, and the one with big grades ranks first. It's not a lottery yet.
After the group qualify, if the top two advance to the quarter-finals, they will draw lots to enter.
1 ~ 8, note that the first round of the knockout group should be the first game of the group.
Second in the group, not second in the same group.
In fact, it is time-consuming for 36 people to divide into four groups to play a single round robin, because each group needs 36 games and the four groups have 144 games. increase
* * * will play 156 of the 12 games contested by the top 8. If you separate
Eight groups, four groups with four people, and four groups with five people. Then, 4 groups of 6 innings, 24 innings in each group; There are 4 groups 10 * * * with 40 games in each group. There are 64 matches in the round robin, even if the top 8 players have 12 matches, only 76 matches are needed. The scores of the four groups were 80 games short.
Save a lot of time.
I'm not sure. Please ask again.