#include <cstdio>
#include <vector>
#define repeat(i,n) for (int i = 0; (i) < int(n); ++(i))
using ll = long long;
using namespace std;
int main() {
    int n; ll k; scanf("%d%lld", &n, &k);
    vector<int> d(n); repeat (i,n) { scanf("%d", &d[i]); -- d[i]; }
    vector<int> e(n); repeat (i,n) e[d[i]] = i;
    repeat (i,n) {
        if (d[i] != i) {
            int j = e[i];
            swap(d[i], d[j]);
            e[d[i]] = i;
            e[d[j]] = j;
            k -= 1;
        }
    }
    bool result = k >= 0 and k % 2 == 0;
    printf("%s\n", result ? "YES" : "NO");
    return 0;
}