n, k = map(int, input().split())
s = {input(): i for i in range(n)}
t = {input(): i for i in range(n)}

for name in s.keys():
    s_idx = s[name]
    t_idx = t[name]
    
    if abs(s_idx - t_idx) % k != 0:
        print("No")
        exit()
        
print("Yes")