#include<iostream>
#include<fstream>
#include<vector>

using namespace std;

int main();
{
	int n, m, i,x,y;
	ifstream f("dfs.in");
	f >> n >> m;
	vector<vector<int>> v(n);
	vector<int>viz(n+1,0);
	for (i = 1; i <= m; i++)
	{
		f >> x >> y;
		v[x].push_back(y);
		v[y].push_back(x);
	}
	for (i = 1; i <= n; i++)
		cout << v(i);
	f.close();
	system("PAUSE");
	return 0;
}