#include<bits/stdc++.h>
using namespace std;
#define rep(i,a,b) for(int i=a;i<b;i++)




typedef long long ll;
int N; ll K;
int D[201010];
//-----------------------------------------------------------------
int idx[201010];
int main() {
	cin >> N >> K;
	rep(i, 0, N) scanf("%d", &D[i]), D[i]--;

	rep(i, 0, N) idx[D[i]] = i;

	int cnt = 0;
	rep(i, 0, N) {
		if (idx[i] == i) continue;

		int a = i;
		int b = idx[i];
		swap(idx[a], idx[b]);
		cnt++;
	}

	ll d = K - cnt;

	if (0 <= d && d % 2 == 0)
		printf("YES\n");
	else
		printf("NO\n");
}