#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
#define ll long long
#define rep(i,a,b) for(int i=(a);i<(b);i++)
#define repl(i,a,b) for(ll i=(a);i<(b);i++)
#define all(a) (a).begin(),(a).end()
#define rall(a) (a).rbegin(),(a).rend()

template <typename T> bool chmin(T &a,T b){if(a>b){a=b;return true;} return false;}
template <typename T> bool chmax(T &a,T b){if(a<b){a=b;return true;} return false;}


int main(){
  ios::sync_with_stdio(false);
  cin.tie(nullptr);

  int n; cin >> n;
  vector<int> p(n);
  rep(i,0,n) cin >> p[i],p[i]--;
  cout << "Yes" << "\n";
  vector<int> ind(n);
  iota(all(ind),0);
  vector<int> ans;
  rep(i,0,n){
    if(ind[i] != p[i]){
      int id=0;
      rep(j,0,n){
        if(p[i] == ind[j]){
          id=j;
          break;
        }
      }
      int now=i;
      while(now>id){
        ans.push_back(now);
        swap(p[now],p[now-1]);
        now--;
      }
      while(now<id){
        ans.push_back(now+1);
        swap(p[now],p[now+1]);
        now++;
      }
    }
  }
  cout << ans.size() << "\n";
  for(auto a:ans) cout << a << "\n";
}