#include <bits/stdc++.h>
#define MAX 50010
using namespace std;
ifstream fin("sortaret.in");
ofstream fout("sortaret.out");
vector <int>g[MAX];
vector <int>a[MAX];
int grad[MAX];
int nr,n,m;
void citire();
void desc();
int main()
{
    int i,j;
    citire();
    desc();
    for(i=0; i<nr; i++)
    {
        for(j=0; j<a[i].size(); j++)
            fout<<a[i][j]<<' ';
    }
    return 0;
}
void citire()
{
    int i,x,y;
    fin>>n>>m;
    for(i=1; i<=m; i++)
    {
        fin>>x>>y;
        g[x].push_back(y);
        grad[y]++;
    }
}
void desc()
{
    bool ok=1;
    int i,j,p=n;
    while(p)
    {
        for(i=1; i<=n; i++)
            if(grad[i]==0)
            {
                a[nr].push_back(i);
                p--;
            }
        for(i=0; i<a[nr].size(); i++)
        {
            for(j=0; j<g[a[nr][i]].size(); j++)
                grad[g[a[nr][i]][j]]--;
            grad[a[nr][i]]=-1;
        }
        nr++;
    }
}