#include <bits/stdc++.h>



using namespace std;

ifstream fin("sortaret.in");
ofstream fout("sortaret.out");



const int N = 50009;
vector<int> a[N];
int n,m,poz;
vector<int> ordine(N, 0);




vector<int> viz(N,0);

void DFS_ST(int x)
{
    viz[x] = 1;

    for(auto y: a[x])
        if(!viz[y])
            DFS_ST(y);
    
    ordine[poz--] = x; 
}


int main()
{
    fin >> n >> m;
    for(int i = 1; i <= m; i++)
    {
        int x, y;
        fin >> x >> y;
        a[x].push_back(y);
    }

    poz = n;
    for(int i = 1; i <= n; i++)
    {
        if(!viz[i])
            DFS_ST(i);
    }

    for(int i =1; i <= n; i++)
        fout << ordine[i] << " ";

    return 0;
}