#include <bits/stdc++.h>
#define startt ios_base::sync_with_stdio(false);cin.tie(0);
#pragma GCC target ("avx2")
#pragma GCC optimization ("O3")
#pragma GCC optimization ("unroll-loops")
typedef unsigned long long ull;
typedef long long  ll;
using namespace std;
#define FOR(n) for(int i=0;i<n;i++)
#define vt vector
#define vint vector<int>
#define all(v) v.begin(), v.end()
#define sz(a) (int)a.size()
#define MOD 1000000007
#define MOD2 998244353
#define MX 1000000000
#define nax 100005
#define MXL 1000000000000000000
#define PI 3.14159265
#define pb push_back
#define pf push_front
#define sc second
#define fr first
#define int ll
#define endl '\n'
#define ld long double

int n; // number of vertices
vector<vector<int>> adj; // adjacency list of graph
vector<bool> visited;
vector<int> ans;

void dfs(int v) {
	visited[v] = true;
	for (int u : adj[v]) {
		if (!visited[u])
			dfs(u);
	}
	ans.push_back(v);
}

void topological_sort() {
	visited.assign(n+1, false);
	ans.clear();
	for (int i = 1; i <= n; i++) {
		if (!visited[i])
			dfs(i);
	}
	reverse(ans.begin(), ans.end());
}

int32_t main() {
	startt;
	freopen("sortaret.in", "r", stdin);
	freopen("sortaret.out", "w", stdout);
	int m;
	cin >> n >> m;
	for(int i = 0; i <= n+1; i++)
	{
		vint a;
		adj.pb(a);
	}
	for(int i = 0; i < m; i++)
	{
		int x, y;
		cin >> x >> y;
		adj[x].pb(y);
	}
	topological_sort();
	for(auto x : ans)
	{
		cout << x << " ";
	}
}