#include <fstream>
#include <vector>
using namespace std;
ifstream cin("sortaret.in");
ofstream cout("sortaret.out");
vector<int>v[50005];
vector<int>sol;
bool used[50005];
void dfs(int nod)
{
    if(used[nod]==1)
        return;
    used[nod]=1;
    for(auto it: v[nod])
        dfs(it);
    sol.push_back(nod);
}
int main()
{
    int n,m,i,a,b;
    cin>>n>>m;
    for(i=1; i<=m; i++)
    {
        cin>>a>>b;
        v[b].push_back(a);
    }
    for(i=1; i<=n; i++)
        dfs(i);
    for(auto it: sol)
        cout<<it<<" ";
    return 0;
}