#include <stdio.h>
#include <string.h>
#include <stdlib.h>
int cmp(const void *a, const void *b) {return strcmp(*(const char **)a, *(const char **)b);}
int main() {int N, K;scanf("%d %d", &N, &K);char S[N][21], T[N][21];for (int i = 0; i < N; i++) scanf("%s", S[i]);for (int i = 0; i < N; i++)scanf("%s", T[i]);for (int i = 0; i < K; i++) {char *s[K], *t[K];for (int j = 0; j < N; j++) {if (j % K == i) {s[j / K] = S[j];t[j / K] = T[j];}}qsort(s, N / K, sizeof(char *), cmp);qsort(t, N / K, sizeof(char *), cmp);for (int j = 0; j < N / K; j++) {if (strcmp(s[j], t[j])) {printf("No\n");return 0;}}}printf("Yes\n");return 0;}