#include <cstdio>
#include <vector>
using namespace std;
vector <int>g[100010];
vector<int>o;
int viz[50010],n,m;
void citire()
{
    int x,y;
    scanf("%d %d",&n,&m);
    for(int i=0;i<m;i++)
    {
        scanf("%d %d",&x,&y);
        g[x].push_back(y);
    }
}
void adancime(int v)
{
    for(int j=0;j<g[v].size();j++)
    {
        int q=g[v][j];
        if(viz[q]==0)
        {
            viz[q]=1;
            adancime(q);
        }
    }
    o.push_back(v);
}
void verific()
{
    for(int i=1;i<=n;i++)
    {
        if(viz[i]==0)
        {
            viz[i]=1;
            adancime(i);
        }
    }
}
void afisare()
{
    while(!o.empty())
    {
        printf("%d ",o.back());
        o.pop_back();
    }
}
int main()
{
    freopen("sortaret.in","r",stdin);
    freopen("sortaret.out","w",stdout);
    citire();
    verific();
    afisare();
    return 0;
}