#include <iostream>
#include <fstream>
#include <queue>
using namespace std;

ifstream in("interclasari.in");
ofstream out("interclasari.out");

class cmp
{
    public:
        bool operator() (int x, int y) const
        {
            return x > y;
        }
};

priority_queue < int, vector <int>, cmp > H;

int ans;

int N, K;

int main()
{
    int i, j, x;

    in >> K;

    for(i = 1; i <= K; i++)
    {
        in >> N;

        ans += N;

        for(j = 1; j <= N; j++)
        {
            in >> x;

            H.push(x);
        }
    }

    out << ans << '\n';

    while(!H.empty())
    {
        x = H.top();
        H.pop();

        out << x << " ";
    }

    return 0;
}