N,K=map(int,input().split())
S=[input() for _ in range(N)]
T=[input() for _ in range(N)]
checked=[0 for _ in range(N)]
for i in range(N-K):
    if checked[i]:continue
    if set(S[i::K])!=set(T[i::K]):
        exit(print("No"))
    for j in range(i,N,K):
        checked[j]=1
for i in range(N):
    if checked[i]:continue
    if S[i]!=T[i]:
        exit(print("No"))
print("Yes")