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#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef long double ld;
#define st first
#define nd second
#define pb push_back
#define mp make_pair
#define rep(i,a,b) for(ll i=(ll)a;i<=(ll)b;++i)
#define all(a) a.begin(),a.end()
#define sz(x) (int)(x).size()
const int mxN = 3e3+7;
int a[mxN],b[mxN], c[mxN], mx = 0; // b = {index, wartosc}, c = {wartosc, index}
bool vis[mxN];
vector<int> cycle;
vector<pair<int,int>> pierw;
vector<pair<int,int>> drug;

void dfs(int v){
    cycle.pb(v);
    vis[v] = 1;
    if(!vis[a[v]]) dfs(a[v]);
}

int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int n; cin >> n;
    rep(i,1,n) cin >> a[i];
    rep(i,1,n) b[i] = a[i];
    sort(b+1,b+n+1);
    rep(i,1,n) c[b[i]] = i;
    rep(i,1,n) a[i] = c[a[i]];
    rep(i,1,n) if(!vis[i]){
        dfs(i);
        mx = max(mx, sz(cycle));
        int x = 0, y = sz(cycle)-1;
        while(sz(cycle) > 1 && x < y){
            pierw.pb({cycle[x],cycle[y]});
            x++, y--;
        }
        cycle.clear();
    }
    if(mx == 1) cout << "0\n";
    else if(mx == 2){
        cout << "1\n";

        rep(i,1,n) if(a[i] < i) drug.pb({a[i] , i});
        cout << 2*sz(drug) << "\n";
        for(auto [u,v] : drug) cout << u << " ";
        reverse(all(drug));
        for(auto [u,v] : drug) cout << v << " ";
        cout << "\n";

    }else{
        cout << "2\n";
        cout << 2*sz(pierw) << "\n";
        for(auto [u,v] : pierw) cout << u << " ";
        reverse(all(pierw));
        for(auto [u,v] : pierw) cout << v << " ";
        cout << "\n";

        for(auto [u,v] : pierw) swap(a[u], a[v]);
        rep(i,1,n) if(a[i] < i) drug.pb({a[i] , i});
        cout << 2*sz(drug) << "\n";
        for(auto [u,v] : drug) cout << u << " ";
        reverse(all(drug));
        for(auto [u,v] : drug) cout << v << " ";
        cout << "\n";

    }
}