n, k = map(int, input().split())
s = []
t = []

for i in range(n):
    s.append(input())

for i in range(n):
    t.append(input())

possible = True
for i in range(k):
    s_group = []
    t_group = []
    for j in range(i, n, k):
        s_group.append(s[j])
        t_group.append(t[j])
    
    if sorted(s_group) != sorted(t_group):
        possible = False
        break

print("Yes" if possible else "No")