#include <fstream>
#include <vector>
#define NMAX 50001
using namespace std;
ifstream fin("sortaret.in");
ofstream fout("sortaret.out");
vector <int> L[NMAX];
int n,m,x,y,vf,i,j,Di[NMAX];
int main()
{
    fin>>n>>m;
    for(i=1;i<=m;i++)
        {
            fin>>x>>y;
            L[x].push_back(y);
            Di[y]++;
        }
    vf=0;
    while(vf<n)
    {
        for(i=1;i<=n;i++)
        {
            if(Di[i]==0)
            {
                fout<<i<<" ";
                Di[i]=-1;vf++;
                for(j=0;j<L[i].size();j++)
                    Di[L[i][j]]--;
            }
        }
    }
}