#include <fstream>

using namespace std;

ifstream fin ("royfloyd.in");
ofstream fout ("royfloyd.out");

int dist[101][101];

int main()
{
    fin >> n;
    for (int i=1; i <= n; i++)
        for (int j=1; j <= n; j++)
            fin << dist[i][j];

    for (int k=1; k <= n; k++)
        for (int i=1; i <= n; i++)
            for (int j=1; j <= n; j++)
                if (dist[i][k] && dist[k][j] && (dist[i][j] > dist[i][k] + dist[k][j] || !dist[i][j]) && i != j) dist[i][j] = dist[i][k] + dist[k][j];

    for (int i=1; i <= n; i++)
        for (int j=1; j <= n; j++)
            fout << dist[i][j];
    return 0;
}