#include <fstream>
#include <vector>
using namespace std;
ifstream f("sortaret.in");
ofstream g("sortaret.out");
vector<int>a[50000],c;
int n,nr,v[200],x,y;
int main()
{
    int z=0;
    f>>n>>nr;
    for(int i=1; i<=nr; i++)
    {
        f>>x>>y;
        v[y]++;
        a[x].push_back(y);
    }
    /*for(int i=1; i<=n; i++)//afisare la forward_list
    {
        while(!a[i].empty())
        {
            g<<a[i].front()<<' ';
            a[i].pop_front();
        }
        g<<endl;
    }*/
    for(int i=1; i<=n; i++)
        if(v[i]==0)
            c.push_back(i);
    while(z<n)
    {
        int i=c[z];
        z++;
        g<<i<<' ';
        for(int j=0; j<a[i].size(); j++)

           {v[a[i][j]]--;
        if(v[a[i][j]]==0)
            c.push_back(a[i][j]);
           }

        v[i]=-1;
    }
    return 0;
}