#include<fstream>
#include<iostream>
#include<algorithm>
#include<vector>
#define INF 200000000
using namespace std;
ifstream fin("sortaret.in");
ofstream fout("sortaret.out");
int viz[100001],rez[100001],i,n,m,ajung[100001],x,y,k;
vector<int> v[100001];
void sortaret(int x)
{
	viz[x]=1;
	for(int i=0;i<v[x].size();i++)
	{	
		if(!viz[v[x][i]])
		sortaret(v[x][i]);
	}
	rez[++k]=x;
}
int main()
{
	fin>>n>>m;
	for(i=1;i<=m;i++)
	{
		fin>>x>>y;
		v[x].push_back(y);
		ajung[y]++;
	}
	for(i=1;i<=n;i++)
	{
		if(!ajung[i])
		{
			viz[i]=1;
			sortaret(i);
			break;
		}
	}
	for(i=n;i>0;i--)
		fout<<rez[i]<<" ";
	return 0;
}