#include <bits/stdc++.h>

using namespace std;

const int N = 50000 + 7;
int n, m;
vector<int> g[N], ord;
bool placed[N];

void place(int a) {
	if (placed[a]) {
		return;
	}
	placed[a] = true;
	for (auto &b : g[a]) {
		place(b);
	}
	ord.push_back(a);
}

int main() {
#ifdef INFOARENA
	freopen ("sortaret.in", "r", stdin);
	freopen ("sortaret.out", "w", stdout);
#endif

	cin >> n >> m;
	for (int i = 1; i <= m; i++) {
		int a, b;
		cin >> a >> b;
		g[a].push_back(b);
	}
	for (int i = 1; i <= n; i++) {
		place(i);
	}
	reverse(ord.begin(), ord.end());
	for (auto &a : ord) {
		cout << a << " ";
	}
	cout << "\n";
	return 0;
}