#include <bits/stdc++.h>
#define pb push_back
using namespace std;
ifstream f("sortaret.in");
ofstream g("sortaret.out");

int n,m,i,j,x,y,gr[50001],ok,k;


int main()
{
    f>>n>>m;
    vector <int > v[n+3];
    for(i=1;i<=m;i++)
    {
        f>>x>>y;
        v[x].pb(y);
        gr[y]++;

    }
    queue <int >q;

    for(i=1;i<=n;i++)
    {
        if(!gr[i])
            q.push(i);
    }

   for(i=1;i<=n;i++)
    {
        x=q.front();
        q.pop();
        g<<x<<" ";
        for(j=0;j<v[x].size();j++)
        {
            y=v[x][j];
            gr[y]--;
            if(!gr[y])
                q.push(y);
        }
    }

    return 0;

}