#include <bits/stdc++.h>
using namespace std;
const long double EPS = 1e-8;
const long double PI = 3.1415926535897932384626433832795;
const long double E = 2.7182818284;
const int INF = 1000000000;
int main(void) {
  int n, m;
  cin >> n >> m;
  vector<int> colour(n + 1);
  vector<vector<int> > h(n + 1);
  for (int i = 0; i < m; i++) {
    int x, y;
    cin >> x >> y;
    h[x].push_back(y);
    h[y].push_back(x);
  }
  int w = 1;
  for (int t = 0; t < n && w; t++) {
    w = 0;
    for (int i = 1; i <= n; i++) {
      int z = 0;
      for (int j = 0; j < h[i].size(); j++) {
        if (colour[i] == colour[h[i][j]]) {
          z++;
        }
      }
      if (z > 1) {
        colour[i] ^= 1;
        if (!w) w = 1;
      }
    }
  }
  for (int i = 1; i <= n; i++) {
    cout << colour[i];
  }
  return 0;
}
