import sys

n, k = map(int, input().split())
s = []
t = []
for i in range(n):
    s.append(input())
for i in range(n):
    t.append(input())

for i in range(k):
    p = []
    q = []
    for j in range(i, n, k):
        p.append(s[j])
        q.append(t[j])
    p.sort()
    q.sort()
    if p != q:
        print("No")
        sys.exit()
print("Yes")