#include <bits/stdc++.h>

using namespace std;

namespace fastio {
static constexpr int SZ = 1 << 17;
char ibuf[SZ], obuf[SZ];
int pil = 0, pir = 0, por = 0;

struct Pre {
  char num[40000];
  constexpr Pre() : num() {
    for (int i = 0; i < 10000; i++) {
      int n = i;
      for (int j = 3; j >= 0; j--) {
        num[i * 4 + j] = n % 10 + '0';
        n /= 10;
      }
    }
  }
} constexpr pre;

inline void load() {
  memcpy(ibuf, ibuf + pil, pir - pil);
  pir = pir - pil + fread(ibuf + pir - pil, 1, SZ - pir + pil, stdin);
  pil = 0;
}
inline void flush() {
  fwrite(obuf, 1, por, stdout);
  por = 0;
}

inline void rd(char& c) { c = ibuf[pil++]; }
template <typename T>
inline void rd(T& x) {
  if (pil + 32 > pir) load();
  char c;
  do
    c = ibuf[pil++];
  while (c < '-');
  bool minus = 0;
  if (c == '-') {
    minus = 1;
    c = ibuf[pil++];
  }
  x = 0;
  while (c >= '0') {
    x = x * 10 + (c & 15);
    c = ibuf[pil++];
  }
  if (minus) x = -x;
}
inline void rd() {}
template <typename Head, typename... Tail>
inline void rd(Head& head, Tail&... tail) {
  rd(head);
  rd(tail...);
}

inline void wt(char c) { obuf[por++] = c; }
template <typename T>
inline void wt(T x) {
  if (por > SZ - 32) flush();
  if (!x) {
    obuf[por++] = '0';
    return;
  }
  if (x < 0) {
    obuf[por++] = '-';
    x = -x;
  }
  int i = 12;
  char buf[16];
  while (x >= 10000) {
    memcpy(buf + i, pre.num + (x % 10000) * 4, 4);
    x /= 10000;
    i -= 4;
  }
  int d = x < 100 ? (x < 10 ? 1 : 2) : (x < 1000 ? 3 : 4);
  memcpy(obuf + por, pre.num + x * 4 + 4 - d, d);
  por += d;
  memcpy(obuf + por, buf + i + 4, 12 - i);
  por += 12 - i;
}

inline void wt() {}
template <typename Head, typename... Tail>
inline void wt(Head head, Tail... tail) {
  wt(head);
  wt(tail...);
}
template<typename T>
inline void wtn(T x){
  wt(x, '\n');
}

struct Dummy {
  Dummy() { atexit(flush); }
} dummy;

}
using fastio::rd;
using fastio::wt;
using fastio::wtn;

struct UnionFind {
  vector<int> data;
  UnionFind(int N) : data(N, -1) {}
  int find(int k) { return data[k] < 0 ? k : data[k] = find(data[k]); }
  int unite(int x, int y) {
    if ((x = find(x)) == (y = find(y))) return false;
    if (data[x] > data[y]) swap(x, y);
    data[x] += data[y];
    data[y] = x;
    return true;
  }
  int size(int k) { return -data[find(k)]; }
  int same(int x, int y) { return find(x) == find(y); }
};

void run_atcoder_library_check_A() {
  int N, Q;
  rd(N, Q);
  UnionFind uf(N);
  while (Q--) {
    int t, u, v;
    rd(t, u, v);
    if (t)
      wtn(uf.same(u, v));
    else
      uf.unite(u, v);
  }
}

int main() {
  int n, m;
  rd(n, m);
  UnionFind uf(n);
  for (int i = 0; i < m; i++){
    int a, b;
    rd(a, b);
    a--, b--;
    int p = uf.find(a);
    int q = uf.find(b);
    bool w = uf.size(p) > uf.size(q);
    if (uf.size(p) == uf.size(q)) {
      w = p < q;
    }
    if (w) uf.unite(p, q);
    else   uf.unite(q, p);
  }
  for (int i = 0; i < n; i++) {
    if (uf.data[i] < 0) wtn(i + 1);
    else wtn(uf.find(i) + 1);
  }
  return 0;
}