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

int main() {
	cin.tie(nullptr)->sync_with_stdio(false);
#ifdef INFOARENA
	freopen("sortaret.in", "r", stdin);
	freopen("sortaret.out", "w", stdout);
#endif
	int n, m;
	cin >> n >> m;
	vector<vector<int>> adjt(n);
	vector<int> deg(n);
	for(int i = 0; i < m; i++) {
		int u, v;
		cin >> u >> v;
		u--; v--;
		adjt[v].emplace_back(u);
		deg[u]++;
	}
	queue<int> q;
	for(int i = 0; i < n; i++) if(!deg[i]) {
		q.emplace(i);
	}
	vector<int> ord;
	while(!q.empty()) {
		int u = q.front();
		q.pop();
		ord.emplace_back(u);
		for(const auto &it : adjt[u]) if(!(--deg[it])) {
			q.emplace(it);
		}
	}
	reverse(ord.begin(), ord.end());
	for(const auto &it : ord) {
		cout << it + 1 << " ";
	}
	return 0;
}