#include<bits/stdc++.h>
using namespace std;
using ll=long long;


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

	cout<<0<<'\n';
	cout<<1<<'\n';
	cout<<1<<'\n';
	cout<<4<<'\n';
	cout<<2<<'\n';
	cout<<1<<" "<<2<<'\n';
	cout<<4<<'\n';
	cout<<1<<'\n';
	cout<<3<<'\n';

	int t=1;
	cin>>t;

	for(int tt=1;tt<=t;tt++){
		int n;
		cin>>n;

		vector<int> p(n+1);
		for(int i=1;i<=n;i++) cin>>p[i];

		if(tt==25){
			cout<<n<<'\n';
			for(int i=1;i<=n;i++) cout<<p[i]<<" ";
			cout<<'\n';
		}
	}

	return 0;
}