#include<bits/stdc++.h>
#define int long long
#define rep(i,n)for(int i=0;i<(n);i++)
using namespace std;

int d[200000], b[200000];
signed main() {
	int n, k; scanf("%lld%lld", &n, &k);
	rep(i, n) {
		scanf("%lld", &d[i]); d[i]--; b[d[i]] = i;
	}
	rep(i, n) {
		if (i == d[i])continue;
		k--; int j = b[i]; swap(d[i], d[j]); swap(b[d[i]], b[d[j]]);
	}
	if (k >= 0 && k % 2 == 0)puts("YES");
	else puts("NO");
}