# 20240919

ls = input().split()
#print(ls)
n = ls[0]       # 总的节点个数
h = ls[1]       # 头节点的值
d = ls[-1]      # 要删除节点的值
ls1 = ls[2:-1]
ls2 = ls1[0::2]      # ['1', '3', '5', '4', '7']
ls3 = ls1[1::2]     # ['2', '2', '1', '5', '2']
ls4 = [ls[1]]
for k in range(len(ls3)):
    ls4.insert(ls4.index(ls3[k])+1,ls2[k])
ls4.remove(d)
print(*ls4)