#include<iostream>
#include<vector>
#define int long long
#define No NO
#define Yes YES
using namespace std;
const int N=2e5+5,mod=998244353;
int T,n,t[N],vis[N];
vector<int> v;
int ab(int a){
	if(a>0) return a;
	return -a;
}
signed main(){
	ios::sync_with_stdio(0);
    cin>>T;
    while(T--){
    	cin>>n;
    	for(int i=1;i<=n;i++) cin>>t[i];
    	int cnt=0;
    	v.clear();
    	for(int i=1;i<=n;i++){
    		if(vis[i]) continue;
    		cnt++;
    		int c=i;
    		while((!vis[c])||c!=i){
    			vis[c]=1;
    			if(i==1) v.push_back(c);
    			c=t[c];
			}
		}
		for(int i=1;i<=n;i++) vis[i]=0;
		if(cnt>1){
			cout<<n<<"\n";
			cout<<v.size()<<"\n";
			for(auto ver:v) cout<<ver<<" ";
			cout<<"\n";
			v.clear();
			continue;
		}
		v.clear();
		int ans=1e9; 
		for(int i=1;i<=n;i++) ans=min(ans,ab(i-t[i]));
		cout<<n-ans-1<<"\n";
		cout<<"1\n";
		for(int i=1;i<=n;i++){
			if(ab(i-t[i])==ans){
				cout<<i<<"\n";
				break;
			}
		}
	}
    return 0;
}