#include <bits/stdc++.h>
using namespace std;

struct Dsu {
  vector<int> fa, size;
  Dsu(int n) {
    fa.assign(n, 0);
    size.assign(n, 1);
    for (int i = 0; i < n; ++i) {
      fa[i] = i;
    }
  }
  int find(int x) {
    return fa[x] == x ? x : fa[x] = find(fa[x]);
  }
  void unite(int x, int y) {
    fa[find(y)] = find(x);
  }
};

int main() {
  ios::sync_with_stdio(false);
  int n, m;
  cin >> n >> m;
  Dsu *uf = new Dsu(n);
  for (int i = 0; i < m; ++i) {
    int u, v;
    cin >> u >> v;
    --u, --v;
    int su = uf->size[uf->find(u)];
    int sv = uf->size[uf->find(v)];
    if (su > sv or (su == sv and uf->find(u) < uf->find(v))) {
      uf->unite(u, v);
    } else {
      uf->unite(v, u);
    }
  }
  for (int i = 0; i < n; ++i) {
    cout << 1 + uf->find(i) << endl;
  }
  return 0;
}