#include<iostream>
#include<algorithm>
#include<string>
#include<cstring>
#include<sstream>
#include<iomanip>
#include<limits>
#include<deque>
#include<map>
#include<list>
#include<set>
#include <unordered_set>
#include<vector>
#include<cmath>
#include<cstdio>
#include<memory>
#include<bitset>
#include<stack>
#include<functional>
#include<queue>
#include<regex>
#include<time.h>
#include<type_traits>

using namespace std;
using ll = long long;

constexpr ll MOD = 1000000007;
constexpr ll INF = 1050000000;
constexpr ll LONGINF = 1050000000000000000;

struct all_init {
	all_init() {
		cin.tie(0);
		ios::sync_with_stdio(0);
		cout << fixed << setprecision(15);
	};
}ALL_INIT;
struct edge {
	ll from, to, cost;


	edge(int s, int d, int w) : from(s), to(d), cost(w) {}

	bool operator < (const edge& x) const {
		return cost < x.cost;
	}
};

#define CIN(vector_array_etc,n) for(int loop=0;loop<n;loop++){cin>>vector_array_etc[loop];};
#define COUT(vector_array_etc,n) for(int LOOP=0;LOOP<n;LOOP++){cout<<vector_array_etc[LOOP]<<(LOOP == n-1 ?'\n':' ');};
#define VC(Type_name) vector<Type_name>//1次元ならあまり意味ないかも
#define VCVC(Type_name) vector<vector<Type_name>>//2次元配列定義怠過ぎ問題
#define SORT(vector_etc) sort(vector_etc.begin(),vector_etc.end());

template<class T>bool chmax(T &a, const T &b) {
	if (a < b) {
		a = b; 
		return true;
	}
	return false;
}//aに最大値が入る
template<class T>bool chmin(T &a, const T &b) {
	if (b < a) { 
		a = b;
		return true; 
	}
	return false;
}//aに最小値が入る
template<class T>void swap(T &a, const T &b) {
	T tmp = a;
	a = b;
	b = a; 
	return;
}//aとbを入れ替える

template<typename T>
istream& operator >> (istream& is, vector<T>& Vec) { 
	for (T& x : Vec) { is >> x; }
	return is;
}

template<typename V, typename H>
void resize(vector<V>& vec, const H head) {
	vec.resize(head);
}

template<typename V, typename H, typename ... T>
void resize(vector<V>& vec, const H& head, const T ... tail) {
	vec.resize(head); 
	for (auto& v : vec) { resize(v, tail...);}
}

int dx[] = { 0,1,-1, 0,1,-1, 1,-1 };    //i<4:4way i<8:8way
int dy[] = { 1,0, 0,-1,1,-1,-1, 1 };

ll POW_MOD(ll n, ll k, ll mod) {
	ll r = 1;

	for (; k > 0; k >>= 1) {
		if (k & 1) {
			r = (r * n) % mod;
		}
		n = (n * n) % mod;
	}
	return r;
}
ll gcd(ll a, ll b) {
	return b != 0 ? gcd(b, a % b) : a;
}
ll lcm(ll a, ll b) {
	return a * b / gcd(a, b);
}
int mergecount(vector<int> &a) {
	int count = 0;
	int n = a.size();
	if (n > 1) {
		vector<int> b(a.begin(), a.begin() + n / 2);
		vector<int> c(a.begin() + n / 2, a.end());
		count += mergecount(b);
		count += mergecount(c);
		for (int i = 0, j = 0, k = 0; i < n; ++i)
			if (k == c.size())       a[i] = b[j++];
			else if (j == b.size())  a[i] = c[k++];
			else if (b[j] <= c[k])   a[i] = b[j++];
			else { a[i] = c[k++]; count += n / 2 - j; }
	}
	return count;
}
bool isPrime(ll n) {
	if (n < 2)return false;
	for (ll i = 2; i*i <= n; i++)if (!(n%i))return false;
	return true;
}

class UnionFind {
private:
	std::vector<int> parent;
	std::vector<int> height;
	std::vector<int> m_size;

public:
	UnionFind(int size_) : parent(size_), height(size_, 0), m_size(size_, 1) {
		for (int i = 0; i < size_; ++i) parent[i] = i;
	}
	void init(int size_) {
		parent.resize(size_);
		height.resize(size_, 0);
		m_size.resize(size_, 1);
		for (int i = 0; i < size_; ++i) parent[i] = i;
	}
	int find(int x) {
		if (parent[x] == x) return x;
		return parent[x] = find(parent[x]);
	}
	void unite(int x, int y) {
		x = find(x);
		y = find(y);
		if (x == y) return;
		int t = size(x) + size(y);
		m_size[x] = m_size[y] = t;
		if (height[x] < height[y]) parent[x] = y;
		else parent[y] = x;
		if (height[x] == height[y]) ++height[x];
	}
	bool same(int x, int y) {
		return find(x) == find(y);
	}
	int size(int x) {
		if (parent[x] == x) return m_size[x];
		return size(parent[x] = find(parent[x]));
	}
};

//グラフの関節点を列挙する
//最後の2行で、erace uniqueをしない場合は、複数存在し、何個のグラフに分かれるかを判定できる。
vector<int> articulationPoint(const vector<vector<edge>>& g) {
	int n = g.size(), idx;
	vector<int> low(n), ord(n), art;
	function<void(int)> DFS = [&](int v) {
		low[v] = ord[v] = ++idx;
		for (auto& e : g[v]) {
			ll w = e.to;
			if (ord[w] == 0) {
				DFS(w);
				low[v] = min(low[v], low[w]);
				if ((ord[v] == 1 && ord[w] != 2) || (ord[v] != 1 && low[w] >= ord[v])) {
					art.push_back(v);
				}
			}
			else {
				low[v] = min(low[v], ord[w]);
			}
		}
	};
	for (int u = 0; u < n; u++) {
		if (ord[u] == 0) {
			idx = 0;
			DFS(u);
		}
	}

	sort(art.begin(), art.end());//えられた関節点をソート
	art.erase(unique(art.begin(), art.end()), art.end());//同じ関節点が複数存在することがある,

	return art;
}

int main() {
	int n, m; cin >> n >> m;
	vector<vector<edge>> g(n);
	for (int i = 0; i < m; i++) {
		int a, b; cin >> a >> b;
		g[a].emplace_back(a, b, 0);
		g[b].emplace_back(b, a, 0);
	}

	vector<int> arts = articulationPoint(g);
	for (auto i = arts.begin(); i != arts.end(); ++i) {
		cout << *i << endl;
	}

	return 0;
}


Measured memory_bytes: 7456