#include <bits/stdc++.h>

using namespace std;

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

int N, M;
bool Viz[100005];
vector<int>Ad[100005],Ord;

void citire()
{
    int x,y;
    fin>>N>>M;
    for(int i=1;i<=M;i++)
    {
        fin>>x>>y;
        Ad[x].push_back(y);
    }
}

void sortareTopologica(int x)
{
    Viz[x]=1;
    for(unsigned i=0;i<Ad[x].size();i++)
        if(!Viz[Ad[x][i]])
            sortareTopologica(Ad[x][i]);
    Ord.push_back(x);
}

int main()
{
    citire();
    for(int i=1;i<=N;i++)
        if(!Viz[i])
            sortareTopologica(i);
    for(int x=(int)Ord.size()-1;x>=0;x--)
        fout<<Ord[x]<<" ";
    return 0;
}