#include <bits/stdc++.h>
using namespace std;

const string FILENAME = "sortaret";
ifstream fin(FILENAME + ".in");
ofstream fout(FILENAME + ".out");

#define pb push_back
#define mp make_pair

using ll = long long;

int n, m;
vector<int> adj[50001];
vector<int> ord;
bitset<50001> viz;

void dfs(int nod)
{
    viz[nod] = 1;
    for(auto i : adj[nod])
        if(!viz[i])
            dfs(i);
    ord.pb(nod);
}

int main()
{
    int x, y;
    fin >> n >> m;
    while(m--)
    {
        fin >> x >> y;
        adj[x].push_back(y);
    }
    for(int i = 1; i <= n; i++)
        if(!viz[i])
            dfs(i);
    reverse(ord.begin(), ord.end());
    for(auto i : ord)
        fout << i << " ";
    fin.close();
    fout.close();
	return 0;
}