#include <iostream>
#include <vector>

using namespace std;

int used[100];
vector<vector<int>> v;
int n, s;

int main()
{
	cin >> n >> s;
	vector<vector<int>> vec(n, vector<int>(n));

	for (int i = 0; i < n; ++i)
	{
		for (int j = 0; j < n; ++j)
		{
			cin >> vec[i][j];
		}
	}
	int cnt = 0;
	v.resize(n);
	for (int i = 0; i < n; ++i)
	{
		for (int j = 0; j < n; ++j)
		{
			if (vec[i][j] == 1)
			{
				v[i].push_back(j + 1);
			}
		}
	}
	cout << "\n";
	for (int i = 0; i < n; ++i)
	{
		for (int j = 0; j < v[i].size(); ++j)
		{
			cout << v[i][j] << " ";
		}
		cout << "\n";
	}
}