#include <iostream>


using namespace std;
int index(int i, int j, int n)
{
 return i*n+j;
}

void readinput(int mx[], int n )
{
    for (int i = 0; i < n; i++)
    {
        for (int j = 0; j < n; j++)
        {
            int ind = index(i,j,n);
            cin>>mx[ind];
        }
    }
}
string dummy(int p, int d, int n)
{
    string so="";
    int x =n*n/d;//count of elements in a region
    int r1=1;
    int r=0;
    for (int i = 0; i < n; i++)
    {
        string s="";
        for (int j = 0; j < n; j++)
        {
            r++;
            if(r>x)
            {
                r=1;r1++;
            }
            if ((i%2)==0)
            {
                s+=to_string(r1)+" ";
            }
            else
            {
                s=to_string(r1)+" "+s;
            }
        }
        so+=s+"\n";
    }
    string rez = "";
    for (int i = 0; i < p; i++)
    {
        rez+=so;
    }
    return rez;
}
int main()
{
    int n,d,p;
    string rez="";
    freopen("gerrymandering.in","r",stdin);
    freopen("gerrymandering.out","w",stdout);

    cin>>n>>d>>p;  
    //cout << "0%2 " << 0%2 << "\n1%2 "<< 1%2 << "\n2%2 " << 2%2;

    int country[n*n];
   
    readinput(country,n);
    rez = dummy(p, d, n);
    
    cout << rez;

}