from collections import defaultdict
n,k=map(int,input().split())
idx=defaultdict(str)
for _ in range(n):
    s=input()
    idx[s]=_
ord=[]
for i  in range(n):
    t=input()
    ord.append(idx[t])
check=[]
now=defaultdict(list)
for i in range(k):
    new=[]
    for j in range(i,n,k):
        new.append(ord[j])
    now[i]=sorted(new,reverse=True)
for i in range(n):
    check.append(now[i%k].pop())
if all(check[i]<check[i+1]for i in range(n-1)):
    print("Yes")
else:
    print("No")