Day 1: Now all of our villages are having hidden bandits and they have taken 3 weapons, that is, A gun (A), A Gun (B) and a knife (C), so the bandits today is the There is a gun (A) bullet (B) and Knives (C) (A ∩ B ∩ C), but today's special is that we must randomly choose who we think he is the robber from opening 2 cards.