#include <bits/stdc++.h>
#include <unordered_map>
#define nmax 50006
#define MOD 1999999973
#define INF 2012345678
#define ll long long
using namespace std;
//#define fin cin
//#define fout cout

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

int n, m;
vector <int> L[nmax];
bitset <nmax> viz;
int sol[nmax], lg;

void DFSLex(int k)
{
	viz[k] = 1;
	for (int i : L[k])
		if (viz[i] == 0)
			DFSLex(i);
	sol[++lg] = k;
}

void SortTop()
{
	for (int i = 1; i <= n; i++)
		if (viz[i] == 0)
			DFSLex(i);
}

int main()
{
	int i, j;
	fin >> n >> m;
	while (m--)
	{
		fin >> i >> j;
		L[i].push_back(j);
	}

	SortTop();

	for (i = n; i >= 1; i--)
		fout << sol[i] << " ";
	fin.close();
	fout.close();
	return 0;
}