#include <iostream>
#include<vector>
#include<fstream>
#include<queue>
#include<algorithm>
using namespace std;

ifstream fin("sortaret.in");
ofstream fout("sortaret.out");

struct nod
{
    vector<int> ext;
    vector<int> in;
};
vector<nod> G;
long long N, M;
void read()
{
    //cout<<"Reading..."<<endl;

    fin>>N>>M;
    //cout<<"Reading dimensions"<<endl;
    G.resize(N+5);
    for(long long i = 1; i<=M; i++)
    {
        int x,y;
        fin>>x>>y;
        G[x].ext.push_back(y);
        G[y].in.push_back(x);


    }
    //cout<<"Finished reading"<<endl<<endl;
}

void Kahn()
{

    queue<int> S;
    vector<int> L;

    for(unsigned long i = 1; i<=N; i++)
    {
        if(G.at(i).in.empty()) S.push(i);
    }
    //cout<<S.size()<<" corners"<<endl;
    while(!S.empty())
    {
        int n = S.front();
        S.pop();
        L.push_back(n);
      //  cout<<"n="<<n<<endl;
      //  cout<<"L={";
      //  for(unsigned int k = 0;k<L.size();k++) cout<<L[k]<<" ";
      //  cout<<"}"<<endl;
        if(!G[n].ext.empty())
        {


            for(unsigned int v = 0; v<G[n].ext.size(); v++)
            {
               // if(n==9)
               // {
                  //  cout<<"Entered last loop ext = "<<G[n].ext.size()<<" in = "<<G[n].in.size()<<endl;
               // }
                int c = G.at(n).ext.at(v);

                //cout<<"Deleting the edge of "<<n<<" to "<<c<<endl;
                //cout<<"Before:";
                //for(unsigned int k = 0; k<G[c].in.size(); k++) cout<<G[c].in[k]<<" ";
                //cout<<endl;
                G[c].in.erase(remove(G[c].in.begin(),G[c].in.end(),n),G[c].in.end());
                //cout<<"After:";
                //for(unsigned int k = 0; k<G[c].in.size(); k++) cout<<G[c].in[k]<<" ";
                //cout<<endl;
                if(G[c].in.empty())
                    {
                        //cout<<"Pushing "<<c<<" into S"<<endl;
                        S.push(c);
                    }
            }
        }
    }
    for(unsigned int i = 0; i<L.size(); i++)
        fout<<L.at(i)<<" ";
    //cout<<endl;


}
int main()
{
    read();
    Kahn();
}