#include <fstream>
using namespace std;
ifstream fin("sortaret.in");
ofstream fout("sortaret.out");
int m, n, x, y;
int di[10000], a[10000][10000];
int neviz, nrniv, nr;

void citire();
void afisare();
void descomp();

int main()
{
    citire();
    descomp();
    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; di[y]++;
    }
}

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