#include <iostream>
#include <fstream>

using namespace std;

int main()
{
    int n,a[50][50],i,j,aux;

    int cifre[50][50];
     int coloane[50];
     int c=0;
    ifstream citeste("matr.in");
    citeste>>n;
    for(i=1;i<=n;i++)
    for(j=1;j<=n;j++)
    {
        citeste>>a[i][j];

    }

    for(i=1;i<=n;i++)
    for(j=1;j<=n;j++)
    {
        cifre[i][j]=0;
        aux=a[i][j];
        do
        {
            cifre[i][j]++;
            aux/=10;
        }
        while (aux);

    }
for(i=1;i<=n;i++)
{


    for(j=1;j<=n;j++)
    {
    cout<<cifre[i][j]<<" ";
    }
    cout<<endl;
}
int k;


    for(j=1;j<=n;j++)
    {
        k=1;


     for(i=1;i<=n;i++)
     {
         if(i<n)
         if(cifre[i][j]!=cifre[i+1][j])
         k=0;


     }
     if(k==1)
     {
         c++;
        coloane[c]=j;
     }

    }
cout<<c<<endl;
    if(c==0)
    cout<<"Nu sunt coloane care au fiecare numere aceleas numere de cifre.";
    else
    {


    cout<<"Coloanele cu numarul de cifre al numerelor egal sunt: ";
    for(i=1;i<=c;i++)
    cout<<coloane[i]<<" ";
    }








    return 0;
}