#include <iostream>
#include <fstream>
using namespace std;
ifstream fin("sortaret.in");
ofstream fout("sortaret.out");
int N, M;
struct graf
{
    int c1,c2;
}g[100005];
int grade[50005];
int main()
{
    fin>>N>>M;
    for(int i=1;i<=M;i++)
    {
        fin>>g[i].c1>>g[i].c2;
        grade[g[i].c2]++;
    }
    int coada[50005],pr=1,ul=1;
    for(int i=1;i<=N;i++)
    {
        if(grade[i]==0)
        {
            coada[ul]=i;
            ul++;
        }
    }
    while(pr<ul)
    {
        for(int i=1;i<=M;i++)
        {
            if(g[i].c1==coada[pr])
            {
                grade[g[i].c2]--;
                if(grade[g[i].c2]==0)
                {
                    coada[ul]=g[i].c2;
                    ul++;
                }
            }
        }
        fout<<coada[pr]<<" ";
        pr++;
    }
    return 0;
}