n = int(input())
cab = cbc = cac = 0
for c, d in zip(input(), input()):
    if c > d:
        print('No')
        exit()
    if c == d:
        continue
    if c == 'A':
        if d == 'B':
            cab += 1
        else:
            cac += 1
    else:
        cbc += 1
ans = cab == cbc and (cac == 0 or cab > 0)
print('Yes' if ans else 'No')