#include <iostream>
#include <vector>
#include <algorithm>
#include <string>
#include <cstdlib> // для system
using namespace std;

int** elements;
int maxdepth = 0;

int get(int index, int depth) {
	int m = elements[index][0];
	if (depth > maxdepth) {
		maxdepth = depth;
	}
	int* inputs = new int [m];
	if (m == 0) {
		delete inputs;
		return elements[index][1];
	}
	for (int i = 1; i < m + 1; i++) {
		inputs[i-1] = get(elements[index][i], depth + 1);
	}
	int num = 0;
	for (int i = 0; i < m; i++) {
		num += inputs[i] << (m - i - 1);
	}
	delete inputs;
	return elements[index][m + 1 + num];
}

int main()
{
	int n;
	cin >> n;
	elements = new int *[n];
	for (int i = 0; i < n; i++) {
		elements[i] = new int [((1 << 5) + 6)];
	}
	vector<int> vars;
	for (int i = 0; i < n; i++) {
		int m;
		cin >> m;
		if (m == 0) {
			elements[i][0] = 0;
			vars.push_back(i);
		} else {
			elements[i][0] = m;
			for (int j = 1; j < m + 1; j++) {
				int k;
				cin >> k;
				k--;
				elements[i][j] = k;
			}
			for (int j = 0; j < 1 << m; j++) {
				cin >> elements[i][j + m + 1];
			}
		}
	}
	string line = "";
	for (int i = 0; i < 1 << vars.size(); i++) {
		for (int j = 0; j < vars.size(); j++) {
			elements[vars[j]][1] = (i >> (vars.size() - j - 1)) & 1;
		}
		line += std::to_string(get(n - 1, 0));
	}
	cout << maxdepth << endl << line << endl;
	for (int i = 0; i < n; i++) {
		delete [] elements[i];
	}
	delete[] elements;
	system("pause");
	return 0;
}