#include <iostream>
#include <fstream>
using namespace std;
ifstream in("royfloyd.in");
ofstream out("royfloyd.out");
int a[100][100];
int main()
{
    int n,m,x,y,i,j,k;
    in>>n;
    while(m--)
    for(i=1;i<=n;i++)
    {
        in>>x>>y;
        a[x][y]=1;
       // a[y][x]=1;
    }

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

        for(i=1;i<=n;i++,out<<"\n")
            for(j=1;j<=n;j++)
                out<<a[i][j]<<" ";
    return 0;
}