#include <fstream>
#include <bits/stdc++.h>
#define VMAX 50005
using namespace std;
ifstream fin ("sortaret.in");
ofstream fout ("sortaret.out");


queue<int> q;
vector<int> graf[VMAX];
int nr_noduri[VMAX];
vector<int> sir_final;

int main()
{
    ios_base::sync_with_stdio(false);
    int n,m,i,j,k,x;
    fin>>n>>m;

    for(i=0;i<m;i++)
    {
        fin>>j>>k;
        graf[j].push_back(k);
        nr_noduri[k]++;
    }

    for(i=1;i<=n;i++)
        if(nr_noduri[i]==0)
        {
            q.push(i);
        }

    while(!q.empty())
    {
        x=q.front();
        q.pop();
        sir_final.push_back(x);
        for(auto it:graf[x])
        {
            if(nr_noduri[it]==1)
            {
                q.push(it);
            }
            nr_noduri[it]--;
        }
    }
    for(i=0;i<n;i++)
        fout<<sir_final[i]<<' ';

    fout<<'\n';

    return 0;
}