After all the cold dishes of a banquet table are served, there are a total of 7 hot dishes  Among them, 3 Sichuan dishes: K, L, M: 3 Cantonese dishes: Q, N, P: one Shandong cuisine: X  Only one hot dish is served at a time, and the order of serving must meet the following conditions: (1) Sichuan cuisine and Cantonese cuisine cannot be served continuously  (2) P cannot go before Q unless the second goes on Q  (3) P must go before X
(4) M must go before K, and K must go before N
The third to go to Q