#include <stdio.h>
#include <stdlib.h>
int main() {
    int m, n;
    scanf("%d %d", &n, &m);
    int len = m * n;
    len--;
    int** a = (int**)malloc(n * sizeof(int*));
    for (int i = 0; i < n; i++) {
        a[i] = (int*)malloc(m * sizeof(int));
    }
    int* b = (int*)malloc(len * sizeof(int));
    int pos_i, t, pos;
    t = 0;
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < m; j++) {
            scanf("%d", &a[i][j]);
            if (a[i][j] != 0) {
                b[t] = a[i][j];
                t++;
            } else {
                pos_i = i;
            }
        }
    }
    pos = n - pos_i;
    int ni_xu = 0;
    for (int i = 0; i < len; i++) {
        for (int j = i + 1; j < len; j++) {
            if (b[i] > b[j]) {
                ni_xu++;
            }
        }
    }
    if (m % 2 == 0) {
        if ((ni_xu + pos) % 2 == 1) {
            printf("YES");
        } else
            printf("NO");
    } else {
        if (ni_xu % 2 == 0) {
            printf("YES");
        } else
            printf("NO");
    }
    free(b);
    free(a);
    return 0;
}