#include <fstream>
#include <vector>
#include <algorithm>

using namespace std;

const int N = 5e4;

vector <int> s[N+1];
vector <int> sort_top;
bool viz[N+1];

void dfs(int x)
{
    viz[x] = true;
    for (auto y: s[x])
    {
        if (!viz[y])
        {
            dfs(y);
        }
    }
    sort_top.push_back(x);
}

int main()
{
    ifstream in("sortaret.in");
    ofstream out("sortaret.out");
    int n, m;
    in >> n >> m;
    for (int i = 0; i < m; i++)
    {
        int x, y;
        in >> x >> y;
        s[x].push_back(y);
    }
    for (int i = 1; i <= n; i++)
    {
        if (!viz[i])
        {
            dfs(i);
        }
    }
    reverse(sort_top.begin(), sort_top.end());
    for (auto x: sort_top)
    {
        out << x << " ";
    }
    in.close();
    out.close();
    return 0;
}