#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#define rep(i, n) for (i = 0; i < n; i++)
#define rrep(i, n) for (i = n; i >= 0; i--)
#define max(a, b) (a > b ? a : b)
#define min(a, b) (a < b ? a : b)

void swap(int *a, int *b) {
    int t = *a;
    *a = *b;
    *b = t;
}

int main() {
    int n, k;
    scanf("%d %d", &n, &k);
    int d[200000], idx[200000], i;
    rep(i, n) {
        scanf("%d", &d[i]);
        idx[d[i] - 1] = i;
    }
    int cnt = 0;
    rep(i, n) {
        if (d[i] != i + 1) {
            swap(&d[i], &d[idx[i]]);
            cnt++;
        }
    }
    if (cnt <= k && (k - cnt) % 2 == 0) puts("YES");
    else puts("NO");
    return 0;
}