#include <bits/stdc++.h>
using namespace std;

ifstream f("sortaret.in");
ofstream g("sortaret.out");

int n,m,ordine[50005],nr;
vector <int> V[50005];

int viz[50005];

void DFS(int x)
{
    viz[x]=1;
    for(auto &it:V[x])
        if(!viz[it])
        DFS(it);
    ordine[++nr]=x;
}

int main()
{
    f>>n>>m;
    for(int i=1;i<=m;++i)
    {
        int x,y;
        f>>x>>y;
        V[x].push_back(y);
    }
    for(int i=1;i<=n;++i)
        if(!viz[i])
            DFS(i);
    for(int i=n;i>=1;--i)
        g<<ordine[i]<<" ";
    return 0;
}