python题解 n = int(input()) res = 0 m = list(map(int, input().split())) l, r = list(map(int, input().split())) for i in range(1, n): if m[i] == l: if m[i - 1] == r: res = 1 if m[i] == r: if m[i - 1] == l: res = 1 if res: print("Yes") else: print...