#include <iostream>
#include <fstream>
#include <bitset>
#include <vector>
#define NMAX 50005
using namespace std;

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

int n,m,rez[NMAX],k=0;
vector <int> g[NMAX];
bitset <NMAX> vf;

void dfs(int start)
{
    vf[start]=1;
    for(auto node : g[start])
    {
        if(vf[node]==0)
            dfs(node);
    }
    rez[++k]=start;
}

int main()
{
    fin>>n>>m;
    for(int i=1;i<=m;i++)
    {
        int x,y;
        fin>>x>>y;
        g[x].push_back(y);
    }
     for(int i=1;i<=n;i++)
    {
        if(vf[i]==0)
        {
            dfs(i);
        }
    }
     for(int i=n;i>=1;i--)
    {
        fout<<rez[i]<<" ";
    }
    return 0;
}