Judging from the changes in the proportion of winning prizes in recent years, O, F, M and H with the highest gold content are becoming more and more difficult to win prizes. The winning proportion of 202 1 is estimated to be 0. 14%, f is 0. 17%, m is 6.0%, and h is 26%. This set of figures means that you need to kill at least 68% teams to win a valuable American championship prize.