#include <iostream>
#include <fstream>
#include <vector>
#include <bitset>
using namespace std;
ifstream fin("sortaret.in");
ofstream fout("sortaret.out");
#define MAX 51000

bitset<MAX> viz;
vector<int> G[MAX], v;

void st(int nod)
{
    if(viz[nod])
        return;
    viz[nod]=1;
    for(int i=0;i<G[nod].size();i++)
    {
        st(G[nod][i]);
    }
    v.push_back(nod);
}

int main()
{
    int n, m, x, y, i, j;
    fin>>n>>m;
    while(m--)
    {
        fin>>x>>y;
        G[x].push_back(y);
    }
    for(i=1;i<=n;i++)
    {
        st(i);
    }
    for(i=n-1;i>=0;i--)
    {
        fout<<v[i]<<" ";
    }

}