#include <iostream>
using namespace std;

int main() {

    int n,i,j;
    float m[52][51];
    cin>>n;

    for (i = 1; i <= n; i++)
        for (j = 1; j <= n; j++)
            cin>>m[i][j];

    for (i = 1; i <= n; i++) {
        float suma = 0;

            for (j = 1; j <= n; j++)
                suma += m[j][i];

            for (j = n + 1; j > n/2 + 1; j--)
                m[j][i] = m[j - 1][i];

            m[n/2 + 1][i] = suma/n;
    }
    for (i = 1; i <= n + 1; i++) {
        for (j = 1; j <= n; j++)
            cout<<m[i][j]<<" ";
        cout<<'\n';
    }

    return 0;
}