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

#define pb push_back
#define mp make_pair

using ll = long long;

const string myf = "sortaret";
ifstream fin(myf + ".in");
ofstream fout(myf + ".out");

int n, m;
vector<int> g[50005];
bitset<50005> viz;
vector<int> ord;

void dfs(int x) {
	viz[x] = 1;
	for (auto i : g[x]) {
		if (!viz[i])
			dfs(i);
	}
	ord.pb(x);
}

int main() {

	int x, y;

	fin >> n >> m;
	while (m--) {
		fin >> x >> y;
		g[x].pb(y);
	}
	for (int i = 1; i <= n; ++i) {
		if (!viz[i])
			dfs(i);
	}
	reverse(ord.begin(), ord.end());
	for (auto i : ord)
		fout << i << " ";


	fin.close();
	fout.close();
	return 0;
}