lista = input().strip().split() num = int(lista[0]) start = lista[1] listb = lista[2:-1] delete = lista[-1] out = [start,] for i in range(0,len(listb),2): a, b = listb[i+1],listb[i] if a in out: out.insert(out.index(a)+1, b) out.remove(delete) print(" ".join(out))