#include<cstdio>
#include<vector>
using namespace std;

int gd[50005];
vector <int> a[50005];

int main ()
{
    int i,j,n,m,cont,x,y;
    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].push_back(y);
        gd[y]++;
    }
    cont=0;
    while (cont<n)
    {
        for (i=1; i<=n; i++)
            if (!gd[i])
            {
                printf("%d ",i);
                cont++;
                gd[i]=-1;
                for (j=0; j<a[i].size(); j++)
                    gd[a[i][j]]--;
            }
    }
    return 0;
}