n = int(input())
S = list(map(str, input().split()))
T = list(map(str, input().split()))
List = []
for i in range(n):
    if S[i] != T[i]:
        List.append(i+1)
        List.append(S[i])
        List.append(T[i])
for i in range(len(List)):
    print(List[i])