#include <iostream>
#include <fstream>
#include <cstring>
#include <vector>
#define inFile "sortaret.in"
#define outFile "sortaret.out"
#define nMax 50003

using namespace std;

int n,m,dreapta[nMax],ver[nMax];
vector<int> w[nMax];
ofstream fout(outFile);

void sortareTopologica()
{
    int i,j,k;
    for(i=1;i<=n;i++)
    {
        for(j=1;j<=n;j++)
            if(dreapta[j]==0 && !ver[j])
            {
                ver[j]=1;
                fout<<j<<" ";
                for(k=0;k<w[j].size();k++)
                    dreapta[w[j][k]]--;
                break;
            }
    }
    fout.close();
}

int main()
{
    int a,b,i;

    ifstream fin(inFile);
    fin>>n>>m;
    for(i=1;i<=m;i++)
    {
        fin>>a>>b;
        w[a].push_back(b);
        dreapta[b]++;
    }
    fin.close();
    sortareTopologica();
}