#include <fstream>
#include <vector>
#define NMAX 50005
using namespace std;
ifstream fin("sortaret.in");
ofstream fout("sortaret.out");

void read();
void descomp();

int n, m, nr;
vector <int> a[NMAX];
vector <int> niv(NMAX);
vector <int> gi(NMAX);

int main()
{
    read();
    descomp();

    return 0;
}

void read()
{
    int i, x, y;

    fin >> n >> m;

    for (i = 1; i <= m; i++)
    {
        fin >> x >> y;
        a[x].push_back(y);
        gi[y]++;
    }
}

void descomp()
{
    int i, j, numar;

    while (nr < n)
    {
        numar = 0;
        for (i = 1; i <= n; i++)
            if (!gi[i])
                niv[++numar] = i;

        for (i = 1; i <= numar; i++)
        {
            fout << niv[i] << ' ';
            gi[niv[i]] = -1; nr++;
            for (j = 0; j < a[niv[i]].size(); j++)
                gi[a[niv[i]][j]]--;
        }
    }
}