#include <iostream>
#include <vector>
using namespace std;
int main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
int n;
cin >> n;
vector<vector<int>> a(n, vector<int>(n));
vector<int> outdeg(n, 0);
int best = 0;
for (int i = 0; i < n; ++i) {
for (int j = 0; j < n; ++j) {
cin >> a[i][j];
outdeg[i] += a[i][j];
}
if (outdeg[i] > outdeg[best]) {
best = i;
}
}
if (outdeg[best] == n - 1) {
cout << -1 << '\n';
return 0;
}
static const int color[2][2] = {
{1, 2},
{3, 1},
};
cout << 3 << '\n';
for (int i = 0; i < n; ++i) {
for (int j = 0; j < n; ++j) {
int ans = 0;
if (a[i][j]) {
ans = color[a[best][i]][a[best][j]];
}
cout << ans << (j + 1 == n ? '\n' : ' ');
}
}
return 0;
}
