#include <set>
#include <map>
#include <list>
#include <queue>
#include <stack>
#include <cmath>
#include <ctime>
#include <cstdio>
#include <vector>
#include <string>
#include <bitset>
#include <cctype>
#include <cstdlib>
#include <cstring>
#include <utility>
#include <numeric>
#include <complex>
#include <sstream>
#include <fstream>
#include <iomanip>
#include <cassert>
#include <iostream>
#include <iterator>
#include <algorithm>

using namespace std;

typedef long long ll;
const double EPS = 1e-9;
typedef vector<int> vint;
typedef pair<int, int> pint;

#define rep(i, n) REP(i, 0, n)
#define ALL(v) v.begin(), v.end()
#define MSG(a) cout << #a << " " << a << endl;
#define REP(i, x, n) for(int i = x; i < n; i++)

template<class T, class C> void chmax(T& a, C b){ a>b?:a=b; }
template<class T, class C> void chmin(T& a, C b){ a<b?:a=b; }

ll d[200010];

int main(void){
    
    ll N,K,res = 0,total = 0,Found = 0;
    cin >> N >> K;
    
    for(int i = 0; i < N; i++){
        cin >> d[i];
    }
    
    for(ll i = 0; i < N; i++){
        if(d[i] == i+1){
        }else{
            res++;
            i = min(i,d[i]-1);
            
            swap(d[i],d[d[i]-1]);
            i-=1;
        }
    }
    
    //cout << res << endl;
    
    if(res <= K && (K-res) % 2 == 0){
        cout << "YES" << endl;
    }else{
        cout << "NO" << endl;
    }
    
}