#include <bits/stdc++.h>

#define FILES freopen("sortaret.in","r",stdin);\
              freopen("sortaret.out","w",stdout);
#define MAX 50000

using namespace std;

int n, m, a, b, fr[MAX + 5];
vector<int> v[MAX + 5], ans;

int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0), cout.tie();
    FILES
    std::cin >> n >> m;
    for(int i = 1;i <= m; ++i)
    {
        std::cin >> a >> b;
        fr[a]++;
        v[b].push_back(a);
    }

    queue<int> q;
    for(int i = 1;i <= n; ++i)
    {
        if(!fr[i])
            q.push(i);
    }
    while(!q.empty())
    {
        int x = q.front();
        ans.push_back(x);
        q.pop();
        for(auto i : v[x])
        {
            fr[i]--;
            if(!fr[i])
                q.push(i);
        }
    }

    for(int i = ans.size() - 1;i >= 0; --i)
        std::cout << ans[i] << ' ';
}