#ifdef __GNUC__
#pragma GCC optimize ("O3")
#pragma GCC target ("avx")
#endif

#define _USE_MATH_DEFINES

#include <iostream>
#include <iomanip>
#include <stdio.h>

#include <sstream>
#include <algorithm>
#include <cmath>

#include <string>
#include <cstring>
#include <vector>
#include <valarray>
//#include <array>//x C++ (G++ 4.6.4)

#include <queue>
#include <complex>
#include <set>
#include <map>
#include <stack>
#include <list>

#include <cassert>//assert();
#include <fstream>
/////////
#define REP(i, x, n) for(int i = x; i < n; i++)
#define rep(i,n) REP(i,0,n)

/////////
typedef long long LL;
typedef long double LD;
typedef unsigned long long ULL;
#define PII pair<int,int>
/////////
using namespace::std;

// 最大公約数
template<class T>
inline T gcd(T a, T b){return b == 0 ? a : gcd(b, a % b);}
// 最小公倍数
template<class T>
inline T lcm(T a, T b){return a * b / gcd(a, b);}
////////////////////////////////
class UnionFind{
public:
	int cNum;//要素数
	vector<int> parent;
	UnionFind(int n){
		cNum = n;
		parent = vector<int>(n);
		for(int i=0;i<n;++i){parent[i] = i;}
	}
	int find(int x){
		if( parent[x] == x ){return x;}
		return parent[x] = find( parent[x] );
	}
	bool same(int x,int y){return find(x) == find(y);}
	void add(int x,int y){//union
		x = find(x);
		y = find(y);
		if( x==y )return;
		parent[x] = y;
	}
};

inline void solve(){
	int N;
	LL K;
	cin >> N >> K;
	vector<int> room(N);//現在の人番号
	for(int i=0;i<N;++i){
		cin >> room[i];
		--room[i];
	}
	////
	UnionFind uf(N);
	int roomNo,inside;
	int num;
	vector<int> G;
	for(int i=0;i<N;++i){
		roomNo = i;
		inside = room[roomNo];
		num = 0;
		while( !uf.same(inside,roomNo) ){
			uf.add(inside,roomNo);
			roomNo = inside;
			inside = room[roomNo];
			++num;
		}
		if( num ){
			G.push_back( num );
		}
	}
	int size = G.size();
	LL kaisuu = 0;
	for(int i=0;i<(int)size;++i){
		kaisuu += G[i];
	}
	if( K < kaisuu ){
		cout << "NO" << endl;
	}else if( (K - kaisuu)%2 == 0 ){
		cout << "YES" << endl;
	}else{
		cout << "NO" << endl;
	}
}

signed main(void){
	std::cin.tie(0);
	std::ios::sync_with_stdio(false);
	//std::cout << std::fixed;//小数を10進数表示
	//cout << setprecision(16);//小数をいっぱい表示する。16?

	solve();
}