#include <bits/stdc++.h>

using namespace std;

const int N = 53;
const int nx = 10001;
const int ny = 2;

struct Station
{
    int x, y;
    int cnt;
    int prex, prey;
};

Station st[N];
vector<int> tmp;

bool cmp(Station a, Station b) { return make_pair(a.x, a.y) < make_pair(b.x, b.y); }

int main()
{
    ios::sync_with_stdio(false), cin.tie(0), cout.tie(0);
    int n, maxcnt = 0;
    cin >> n;
    for (int i = 1; i <= n; i++)
    {
        cin >> st[i].x >> st[i].y >> st[i].cnt;
        st[i].prex = st[i].x + 1 + ny * N;
        st[i].prey = st[i].y - (nx / ny + 1) - nx * N;
        maxcnt = max(maxcnt, st[i].cnt);
    }
    sort(st + 1, st + n + 1, cmp);
    cout << maxcnt << endl;
    for (; maxcnt > 0; maxcnt--)
    {
        tmp.clear();
        for (int i = 1; i <= n; i++)
            if (st[i].cnt == maxcnt)
                tmp.push_back(i);
        cout << 2 * tmp.size() << " ";
        for (auto i : tmp)
        {
            st[i].cnt--;
            cout << st[i].prex << " " << st[i].prey << " " << st[i].x << " " << st[i].y << " ";
        }
        for (int i = 1; i <= n; i++)
            st[i].prex -= ny, st[i].prey += nx;
        cout << endl;
    }
    return 0;
}