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

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

void citire()
{
    int  x, y;

    fin >> n >> m;

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

void program()
{
    int i, j, NR;

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

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



int main()
{
    citire();
    program();

    return 0;
}