#include <fstream>
#include <algorithm>
using namespace std;

struct lista
{
	int x, y, z;
}v[3510];

int cmp(lista a,lista b)
{
	return a.x<b.x || (a.x==b.x && a.y<b.y) || (a.x==b.x && a.y==b.y && a.z<b.z);
};
 


int main()
{
	ifstream fin("cutii.in");
	ofstream fout("cutii.out");
	int n, t, i;
	
	fin>>n;
	fin>>t;
	
	for( ; t ;--t)
	{
			
		for(i=1;i<=n;++i)
			fin>> v[i].x >>v[i].y >>v[i].z;
		
		sort(v+1,v+n+1,cmp);
		
		
		
	}
	
	return 0;
}