#include <iostream>
#include <utility>
#include <cstdio>
#include <queue>
#include <stack>
#include <algorithm>
#include <numeric>
#include <vector>
#include <set>
#include <map>
#include <string>
#include <cstring>
using namespace std;

#define ALL(a) (a).begin(), (a).end()

using ll = long long;
using P = pair<int, int>;

#define int ll

struct State {
    int v, cost;

    State(int v, int cost): v(v), cost(cost) {}

    // 昇順
    bool operator<(const State& s) const {
        return cost < s.cost;
    }
    // 降順
    bool operator>(const State& s) const {
        return cost > s.cost;
    }
};

void dump_vector(vector<int> vec) {
    for (int i = 0; i < vec.size(); i++) {
        cout << vec[i] << (i < vec.size() - 1 ? " " : "\n");
    }
}

signed main() {
    int n;
    ll k;
    cin >> n >> k;

    int diff_cnt = 0;

    vector<int> d(n);
    for (int i = 0; i < n; i++) {
        cin >> d[i];
        d[i]--;

        if (i != d[i]) diff_cnt++;
    }

    // 2でswapできるだけswap
    ll swap2 = (diff_cnt + 1) / 2;
    if (swap2 > k) {
        cout << "NO" << endl;
    } else if ((k - swap2) % 2 == 0) {
        cout << "YES" << endl;
    } else {
        cout << "NO" << endl;
    }

    return 0;
}