Organize a round of debate, ten groups, how to arrange the competition system?

The first round 10 team won, and the fifth team directly advanced to the next round. The five losing couples draw lots to revive the first team, and add up to six teams to enter the next round.

In the second round, six teams won, three teams entered the semi-finals directly, and three pairs of losers drew lots to revive one team, adding up to four teams entering the semi-finals.

In the semi-final, 4 teams won, 2 teams entered the final and 2 teams lost.

The last two teams to win the finals