#include <bits/stdc++.h>
using namespace std;
//*/
#include <atcoder/all>
using namespace atcoder;
// //*/
// #pragma GCC optimize("Ofast,unroll-loops,no-stack-protector,fast-math")
// #pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
// #pragma GCC target("avx,avx2,fma")
// #pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,fma")
#define rep(i,n) for(int i=0;i<n;i++)
#define Rep(i,a,b) for(int i=a;i<b;i++)
#define ALL(x) (x).begin(),(x).end()
#define dbgv(x); for(auto now : x) cout << now << " "; cout << endl;
//using P = pair<int,int>;
using ll = long long;
using ull = unsigned long long;
//*/
template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef vector<ll> vll;
typedef vector<int> vint;
random_device rnd;
mt19937 rng(rnd());

void solve(){
    int n,m,cnt = 0; cin >> n >> m;
    vector<vint> g(n);
    rep(i,m){
        int u,v; cin >> u >> v;
        u--; v--;
        g[u].push_back(v);
        g[v].push_back(u);
    }
    int w = 0,b = 1;
    vector<bool> vis(n,false);
    vis[0] = true;
    queue<int> now,nxt;
    now.push(0);
    while(1){
        while(!now.empty()){
            int vs = now.front();
            now.pop();
            for(int vf : g[vs])if(!vis[vf]){
                vis[vf] = true;
                w++;
                nxt.push(vf);
            }
        }
        swap(w,b);
        cout << b << endl;
        cnt++;
        swap(now,nxt);
        if(cnt == n) break;
    }
    //dbgv(vis);
}

int main(){
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
  int t = 1; //cin >> t;
  rep(testcase,t) solve();
}