#include <bits/stdc++.h>
#define pb push_back
using namespace std;
ifstream fin("sortaret.in");
ofstream fout("sortaret.out");
const int N=50009;
int n,m;
int sol[N],g[N];
vector <int> v[N];
void solve()
{
    for(int i=1;i<=n;i++)
        if(!g[i])
            sol[++sol[0]]=i;
    for(int i=1;i<=n;i++)
        for(int j=0;j<v[i].size();j++)
        {
            g[v[i][j]]--;
            if(!g[v[i][j]])
                sol[++sol[0]]=v[i][j];
        }
    for(int i=1;i<=n;i++)
        fout<<sol[i]<<" ";
}
int main()
{
    fin>>n>>m;
    for(int i=1;i<=m;i++)
    {
        int x,y;
        fin>>x>>y;
        v[x].pb(y);
        g[y]++;
    }
    solve();
    return 0;
}