#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define int ll
const int N = 5e5 + 7;
int n, m, a[N], p[N];
signed main()
{
    // freopen("soul.in", "r", stdin);
    // freopen("soul.out", "w", stdout);
    ios::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    cin >> n >> m;
    for (int i = 1; i <= n; i++)
        cin >> a[i], p[a[i]] = i;
    int sum = 0;
    for (int i = 1; i <= n; i++)
    {
        if (p[i] == i)
            continue;
        else
        {
            sum++;
            p[a[i]] = p[i];
            swap(a[i], a[p[i]]);
            p[i] = i;
            
        }
    }
    if (m < sum)
        puts("NO");
    else if ((m - sum) & 1)
        puts("NO");
    else
        puts("YES");
}