#include <cstdio>
#include <vector>

#define pb push_back

using namespace std;

vector <int> a[50500];
vector <int>::iterator it;

int q[100000],v[50050],n,m,x,y,i,st,dr;

int main()
{
    freopen ("sortaret.in","r",stdin);
    freopen ("sortaret.out","w",stdout);
    scanf ("%d %d",&n,&m);
    for (i=1; i<=m; i++)
    {
        scanf ("%d %d",&x,&y);
        a[x].pb(y);
        v[y]++;
    }
    st = 1;
    dr = 0;

    for (i=1; i<=n; i++)
        if (v[i] == 0)
            q[++dr] = i;

    while (st <= dr)
    {
        x = q[st];
        for (it=a[x].begin(); it!=a[x].end(); it++)
        {
            v[*it]--;
            if (v[*it] == 0)
                q[++dr] = *it;
        }
        st++;
    }

    for (i=1; i<=n; i++)
        printf ("%d ",q[i]);
    printf ("\n");
    return 0;
}