def func(n,s,t):
    if s==t:
        return True
    a=b=c=0
    x=y=z=0
    for i in range(n):
        if s[i]>t[i]:
            return False
        if s[i]=='A':
            a+=1
        elif s[i]=='B':
            b+=1
        elif s[i]=='C':
            c+=1
        if t[i]=='A':
            x+=1
        elif t[i]=='B':
            y+=1
        elif t[i]=='C':
            z+=1
    if a<=x or b==0 or y==0 or b!=y or c>=z:
        return False
    p=b+2*c
    q=y+2*z
    if p>=q:
        return False
    elif (q-p)%2:
        return False
    return a-(q-p)//2==x

print("Yes" if func(int(input()),input(),input()) else "No")