#include <bits/stdc++.h>

using namespace std;

ifstream inf("sortaret.in");
ofstream outf("sortaret.out");

int n, m;
vector<int> l[50010];
vector<int> sor;
bool usd[50010];

void DFS(int );

int main()
{
    inf>>n>>m;
    for(int i=1; i<=m; i++)
    {
        int x, y;
        inf>>x>>y;
        l[x].push_back(y);
    }
    for(int i=1; i<=n; i++)
        if(!usd[i])
            DFS(i);
    reverse(begin(sor), end(sor));
    for(auto it:sor)
        outf<<it<<' ';
    return 0;
}

void DFS(int p)
{
    usd[p]=true;
    for(auto it:l[p])
        if(!usd[it])
            DFS(it);
    sor.push_back(p);
}