#include <fstream>
#include <vector>
#include <bitset>
using namespace std;

ifstream fin("sortaret.in");
ofstream fout("sortaret.out");

const int nmax = 50001;
int x, y, n, m,crt, srt[nmax];
bitset<nmax> viz;
vector<int> v[nmax];
 

void dfs(int x)
{
	viz[x] = 1;
	for (int i = 0; i < v[x].size(); i++)
	{
		if (!viz[v[x][i]])
		{
			dfs(v[x][i]);
		}
	}
	srt[++crt] = x;

}

int main()
{
	fin >> n >> m;
	for (;m; m--)
	{
		fin >> x >> y;
		v[x].push_back(y);
	}
	crt = 0;
	for (int i = 1; i <= n; i++)
	{
		if (!viz[i])
			dfs(i);
	}
	for (int i = n; i >= 1; i--)
	{
		fout << srt[i] << ' ';
	}

}