def can_transform(S, T):
    S, T = list(S), list(T)
    for i in range(len(S)-1, -1, -1):
        if S[i] > T[i] or (S[i] == 'A' and T[i] == 'C'):
            return "No"
        for j in range(i, -1, -1):
            if S[j] == S[i]:
                S[j] = T[i]
    return "Yes" if S == T else "No"

N = int(input().strip())
S = input().strip()
T = input().strip()

print(can_transform(S, T))