n = int(input()); f = True; x = y = z = 0
for u,v in zip(input(),input()):
    if u>v: f = False
    if u=="A" and v=="B": x += 1
    if u=="A" and v=="C": y += 1
    if u=="B" and v=="C": z += 1
print("Yes" if f and x==z and (x+y==0 or z>0) else "No")