#include <bits/stdc++.h>

using namespace std;

int viz[1001];
vector<int> a[1001],sol;

void dsf(int nod)
{
    viz[nod]=1;
    for(auto it: a[nod])
    {
        if(!viz[it])
        {
            dsf(it);
        }
    }
    sol.push_back(nod);
}

int main () 
{
    freopen("sortaret.in","r",stdin);
    freopen("sortaret.out","w",stdout);
    int n,m;
    cin>>n>>m;
    for(int i=1; i<=m; i++)
    {
        int v,w;
        cin>>v>>w;
        a[v].push_back(w);
    }
    for(int i=1; i<=n; i++)
    {
        if(!viz[i])
        {
            dsf(i);
        }
    }
    reverse(sol.begin(),sol.end());
    for(auto it:sol)
    {
        cout<<it<<" ";
    }
}