#include <iostream>
#include <cstdio>
#include <vector>
#define Nmax 50010
using namespace std;

vector <int> Graf[Nmax];
int Grad[Nmax],Coada[Nmax];
int N;

void Citire()
{
    int x,y,M;
    scanf("%d %d",&N,&M);
    for(int i=1;i<=M;++i)
    {
        scanf("%d %d",&x,&y);
        Graf[x].push_back(y);
        Grad[y]++;
    }
}

void Rezolvare()
{
    for(int i=1;i<=N;++i)
        if(Grad[i]==0)
            Coada[++Coada[0]]=i;
    for(int i=1;i<=N;++i)
    {
        int x=Coada[i];
        for(int j=0;j<Graf[x].size();++j)
        {
            int v=Graf[x][j];
            --Grad[v];
            if(Grad[v]==0)
                Coada[++Coada[0]]=v;
        }
    }
}



int main()
{
    freopen("sortaret.in","r",stdin);
    freopen("sortaret.out","w",stdout);
    Citire();
    Rezolvare();
    for(int i=1;i<=N;++i)
        printf("%d ",Coada[i]);
    return 0;
}