I directly calculated 65438+ billion (just twice the time consumption of 200 million) and divided it into 64 groups, which is equivalent to 1562500 people in each group. Consider 221= 2097152 >1562500, and each game has a winner. As you said, 2 1 round can choose a group of winners.

If it takes 9 hours, the total * * * can support 9*6=54 rounds. If I want to use as little space as possible, I can stagger the initial audition.

Considering that the number of yards in the 2nd1round is1048576,524288, ..., 4, 2, 1.

At this time, 1048576 is divided into two 524288, and 1 wheel can be added, but the space is reduced by half, with 22 wheels.

Similarly, 524288/2=262 144. At this time, add 3 rounds, subtract 1.5 and 25 rounds.

262144/2 =131072, +7 rounds, 32 rounds.

13 1072/2=65536,+15, 47 rounds, and then cannot be added at this time.

Finally, check the following specific activities:

First of all, the number of participants is 1562500, and they need 1048576 games to decide the winner. Just now we calculated that there are at least 65,536 venues, which is equivalent to 16 times per venue, which means that the first round takes 2 hours and 40 minutes.

After the number of people is halved, the second round will be held for 524,288 games, 8 times each, 1 hour and 20 minutes.

The following takes more time, 40 minutes in the third round, 20 minutes in the fourth round, and then every round 10 minutes from the fifth round.

Finally, all of them add up, and 2 1 round is 7 hours and 40 minutes in total.

Theoretically, people with different rounds can be staggered to reduce some venues and increase rounds, but the efficiency will be relatively low (I don't know the specific figures, but it can be said that even if the race lasts 10 hour, the number of venues will not be less than 32,768).

P.S. This is the first martial arts association hhh in the world.