#include <bits/stdc++.h>

using namespace std;
ifstream fin("sortaret.in");
ofstream fout("sortaret.out");
int n,m,i,dg[50010],q[50010],x;
vector <int> sol;
vector <int> v[50010];
int main()
{
    fin>>n>>m;
    for(i=1; i<=m; i++)
    {
        int x,y;
        fin>>x>>y;
        v[x].push_back(y);
        dg[y]++;
    }
    for(i=1;i<=n;i++)
        if(!dg[i])q[++q[0]]=i;
    for(i=1;i<=q[0];i++)
    {
        x=q[i];
        for(auto t:v[x])
        {
            --dg[t];
            if(!dg[t])q[++q[0]]=t;
        }
    }
    for(i=1;i<=n;i++)
        fout<<q[i]<<" ";
    return 0;
}