#include <iostream>
#include <fstream>
#include <vector>

using namespace std;

vector <int>L[50003];
int d[50003], q[50003];
int n,m;

void Citire()
{
    int i,x,y;
    ifstream fin("sortaret.in");
    fin>>n>>m;
    for(i=1;i<m;i++)
    {
        fin>>x>>y;
        L[x].push_back(y);
        d[y]++;
    }
    fin.close();
}

void Rezolvare()
{
   int i,pr,ul,x;
   pr=1;
   ul=0;
   for(i=1;i<=n;i++)
        if(d[i]==0)
            q[++ul]=i;

    while(pr<=ul)
    {
        x=q[pr++];
        for(i=0;i<L[x].size();i++)
        {
            d[L[x][i]]--;
            if(d[L[x][i]]==0)
                q[++ul]=L[x][i];
        }
    }

}

void Afisare()
{
    int i;
    ofstream fout("sortaret.out");
    for(i=1;i<=n;i++)
        fout<<q[i]<<" ";
    fout.close();
}

int main()
{
    Citire();
    Rezolvare();
    Afisare();
    return 0;
}