#include <fstream>

using namespace std;

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

int m, n, x, y;
int dint[5000], a[5000][5000];
int neviz, nrniv;

void citire();
void afisare();
void desc();

int nivc[100];
int nr;

int main()
{
    citire(); neviz=n;
    desc();
    return 0;
}

void citire()
{
    int i;
    fin>>n>>m;
    for(i=1;i<=m;i++)
    {
        fin>>x>>y;
        //introduc pe y in lista de adiacenta a lui x
        a[x][0]++; a[x][a[x][0]]=y; dint[y]++;
    }
}

void desc()
{
    int i, j;
    while(neviz!=0)
    {
        for(i=1;i<=n;i++)
            if(dint[i]==0)
            {
                dint[i]=-1; fout<<i<<' ';
                for(j=1;j<=a[i][0];j++)
                    dint[a[i][j]]--;
                neviz--; break;
            }
    }
}