For example, according to the following scheme, although one or two or three positions can be felt, according to this style of play, then the two teams need to play every day. Physical overdraft is more serious. First, select five cards of 12345 to draw lots. Let 1, 2 play first, 1 win. Three, four, three are winners. 1, 3 enters the next round. Two, four, winner and five. Such a winner plays a three-team round robin with 1 3. Finally, we decided to rank 1, 2, 3. One ***7 games, over.