from collections import defaultdict
N,K=map(int,input().split())
S=defaultdict(list)
for i in range(N):
    S[i%K].append(input())
T=defaultdict(list)
for i in range(N):
    T[i%K].append(input())
for k in S.keys():
    if sorted(S[k]) != sorted(T[k]):
        print("No")
        exit()
print("Yes")