#include <fstream>
#include <vector>

using namespace std;

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

int N;
int M;

struct Nod
{
  vector <int> Ad;

  bool viz=0;
  int gradin=0;
};

vector <int> topolist;

Nod A[50002];

void Read()
{
  fin>>N>>M;

  int x,y;

  for(int i=1; i<=M; ++i)
  {
    fin>>x>>y;

    A[x].Ad.push_back(y);
    A[y].gradin++;
  }

  fin.close();
}

void SortareTopologica(int nod)
{
  A[nod].viz=1;

  for(int i=0; i<A[nod].Ad.size(); ++i)
    if(A[A[nod].Ad[i]].viz==0)
      SortareTopologica(A[nod].Ad[i]);

  topolist.push_back(nod);
}

void Do()
{
   for(int i=1; i<=N; ++i)
     if(A[i].gradin==0 && A[i].viz==0)
       SortareTopologica(i);


}

void Print()
{
  int SZ=N-1;

  for(int i=SZ; i>=0; --i)
    fout<<topolist[i]<<' ';

  fout.close();
}

int main()
{
    Read();
    Do();
    Print();

    return 0;
}