#include <fstream>
#include <vector>
#define NMAX 50005
using namespace std;
ifstream fin("sortaret.in");
ofstream fout("sortaret.out");

void read();
void descomp();

int n, m, nr;
vector <int> a[NMAX];
vector <int> niv(NMAX);
vector <int> gi(NMAX);

int main()
{
	read();
	descomp();

	return 0;
}

void read()
{
	int i, x, y;

	fin >> n >> m;

	for (i = 1; i <= m; i++)
	{
		fin >> x >> y;
		a[x].push_back(y);
		gi[y]++;
	}
}

void descomp()
{
	int i, j, numar;

	while (nr < n)
	{
		numar = 0;
		for (i = 1; i <= n; i++)
			if (!gi[i])
				niv[++numar] = i;

		for (i = 1; i <= numar; i++)
		{
			fout << niv[i] << ' ';
			gi[niv[i]] = -1; nr++;
			for (j = 0; j < a[niv[i]].size(); j++)
				gi[a[niv[i]][j]]--;
		}
	}
}