#include<fstream>
#include <vector>
using namespace std;
int n,m;
vector<int> deg(50001),q(50001);
vector< vector <int> > mat(50001);
ofstream fout("sortaret.out");
void solve()
{
	int val=0;
    for(int i=1;i<=n;++i)
		if(deg[i]==0)
		{
			val++;
			q[val]=i;
		}
	for(int i=1;i<=n;++i)
    {
        int x=q[i];
        for(int j=0;j<mat[x].size();++j)
        {
            deg[mat[x][j]]--;
            if(deg[mat[x][j]]==0)
			{
				val++;
				q[val]=mat[x][j];
			}
        }
    }
}
int main()
{
	ifstream fin("sortaret.in");

	fin>>n>>m;
	for(;m;--m)
	{
		int x,y;
		fin>>x>>y;
		mat[x].push_back(y);
		++deg[y];
	}
    solve();
    for(int i=1;i<=n;++i)
		fout<<q[i]<<" ";
}