[求助]prep-ps2-112

michaelidunk

Think about this approach: the top five finishers get 5, 4, 3, 2 and 1 points, respectively. That is, 15 points are awarded in total. To find the least points one team could get, we want the other teams to get the maximum possible, which is 6. If both the other teams get 6 points, the remaining team could get 3 points. We should do a quick check to make sure that the teams actually can get 6, 6, and 3 points: and indeed they can, if one gets 5+1, one gets 4+2, and the other gets 3.