#include<bits/stdc++.h>

using namespace std;

const int A = 50;
const int X = 1000;

typedef pair< int, int > pii;
#define ff first
#define ss second

int main()
{
  int n;
  scanf("%d", &n );

  vector< vector< pii > > v ( A );

  int ans = 0;
  for( int i = 0; i < n; ++ i )
  {
    int x, y, a;
    scanf("%d %d %d", &x, &y, &a );
    ans = max( ans, a );
    for( int it = 0; it < a; ++ it )
      v[it].push_back( make_pair( x, y ) );
  }

  printf("%d\n", ans );
  const int L0 = 2 * ( 2 * X + 1 );
  printf("%d", L0 );

  for( int x = -X; x <= X; ++ x )
  {
    if( abs( x ) % 2 == 0 )
    {
      printf(" %d %d", x, X );
      printf(" %d %d", x, -X );
    }
    else
    {
      printf(" %d %d", x, -X );
      printf(" %d %d", x, X );
    }
  }

  puts("");

  int Y = 10 * X;
  for( int it = 1; it < ans; ++ it )
  {
    auto vp = v[it];
    sort( vp.begin(), vp.end(), [&] ( auto &p, auto &q ) {
      if( p.ff != q.ff ) return p.ff < q.ff;

      if( abs( p.ff ) % 2 == 0 )
        return p.ss > q.ss;
      return p.ss < q.ss;
    });

    if( (int) vp.size() == 1 ) //need to add one point
    {
      auto p = vp[0];

      printf("2");
      //down always
      if( abs( p.ff ) % 2 == 0 )
        printf(" %d %d", p.ff - 1, -Y );
      else
        printf(" %d %d", p.ff + 1, -Y );

      ++Y;
      printf(" %d %d\n", p.ff, p.ss );
      continue;
    }

    vector< pii > vl;
    const int sz = (int) vp.size();
    for( int i = 0; i < sz - 1; ++ i )
    {
      auto from = vp[i], to = vp[i+1];
      vl.push_back( from );

      if( to.ff <= from.ff + 1 ) continue;

      if( abs( to.ff ) % 2 == 0 )//down
      {
        if( abs( from.ff ) % 2 == 0 )
          vl.push_back( make_pair( from.ff - 1, -Y ) );
        else
          vl.push_back( make_pair( from.ff + 1, -Y ) );

        ++Y;
        vl.push_back( make_pair( to.ff - 1, -Y ) );
        ++Y;
      }
      else//up
      {
        if( abs( from.ff ) % 2 == 0 )
          vl.push_back( make_pair( from.ff + 1, Y ) );
        else
          vl.push_back( make_pair( from.ff - 1, Y ) );

        ++Y;
        vl.push_back( make_pair( to.ff - 1, Y ) );
        ++Y;
      }
    }

    vl.push_back( vp.back() );

    printf("%d", (int) vl.size() );
    for( auto &p : vl )
      printf(" %d %d", p.first, p.second );
    puts("");
  }

  return 0;
}