#include <iostream>
#include <fstream>
#include <vector>
using namespace std;
ifstream fin("sortaret.in");
ofstream fout("sortaret.out");
int n,m;
vector<int>L[50005];
int d[50005];
int main()
{
    int x,y;
    fin>>n>>m;
    for(int i=1;i<=m;i++)
    {
        fin>>x>>y;
        L[x].push_back(y);
        d[y]++;
    }
    int vf=0;
    while(vf<n)
    {
        for(int i=1;i<=n;i++)
        {
            if(d[i]==0)
            {
                fout<<i<<" ";
                d[i]=-1;
                for(int j=0;j<L[i].size();j++) d[L[i][j]]--;
            }
        }
    }
}