# T=int(input())
# for _ in range(T):
#   x1,y1,x2,y2,X1,Y1,X2,Y2=map(int,input().split())

N=int(input())
S=input()
T=input()
if S==T:
  print('Yes')
  exit()
x,y,z=0,0,0
for i in range(N):
  s,t=S[i],T[i]
  if s>t:
    print('No')
    exit()
  if s=='A' and t=='B':
    x+=1
  elif s=='A' and t=='C':
    y+=1
  else:
    z+=1
if x!=z:
  print('No')
  exit()
if z>0:
  print('Yes')
else:
  print('No')