#include <bits/stdc++.h>

using namespace std;

int Viz[50005], postordine[50005], n, m, x, y, nr;
vector <int> V[50005];

void dfs (int x)
{
    Viz[x]=1;
    for (int i=0; i<(int)V[x].size(); i++)
    {
        int next = V[x][i];
        if (!Viz[next])
            dfs(next);
    }
    postordine[++nr]=x;
}

void fast ()
{
    ios_base::sync_with_stdio(false);
	cin.tie();
}

int main()
{
    fast();
    freopen("sortaret.in","r", stdin);
    freopen("sortaret.out","w", stdout);

    cin >> n >> m;
    for (int i=1; i<=m; i++)
    {
        cin >> x >> y;
        V[x].push_back(y);
    }

    for (int i=1; i<=n; i++)
        if (!Viz[i])
            dfs(i);

    for (int i=n; i>0; i--)
        cout << postordine[i] << " ";

    cout << endl;
    return 0;
}