#include<bits/stdc++.h>
#define N 59
using namespace std;
int n,mx;
int px[N],py[N],a[N];
int main(){
	cin>>n;
	for(int i=1;i<=n;i++)cin>>px[i]>>py[i]>>a[i],mx=max(mx,a[i]);
	cout<<mx<<endl;
	for(int x=mx;x>=1;x--){
		vector<pair<int,int>>v,line;
		for(int i=1;i<=n;i++)if(x<=a[i])v.push_back(make_pair(px[i],py[i]));
		sort(v.begin(),v.end());
		if(line.size()==1)line.push_back(make_pair(-1000000000+rand()%10000,-1000000000+rand()%10000));
		line.push_back(v[0]); 
		int k1=10000,k2=100000;
		for(int i=1;i<v.size();i++){
			if(v[i-1].first==v[i].first){
				line.push_back(make_pair(v[i].first-x,v[i].second+k1*x+1));
				line.push_back(make_pair(v[i].first-x,v[i].second+k2*x-1));
			}
			line.push_back(v[i]);
		}
		cout<<line.size()<<" ";
		for(auto i:line)cout<<i.first<<" "<<i.second<<" ";cout<<endl;
	}
	return 0;
}