#include <iostream>
#include <fstream>
using namespace std;
int z[50001];
int main()
{
    ifstream cin ("sortaret.in");
    ofstream cout ("sortaret.out");
    int n,m,a[100001][3],i,j,nr=0;
    cin>>n;
    cin>>m;
    for (i=1;i<=m;i++)
        for (j=1;j<=2;j++)
            {
                cin>>a[i][j];
                if (j==2)
                    z[a[i][j]]++;
            }
         //  for(i=1;i<=n;i++) cout<<z[i]<<" "; cout<<"\n";
    while(nr!=n)
    {
        for (i=1;i<=n;i++)
            {
                if (z[i]==0)
                {
                    z[i]=-1;
                    cout<<i<<" ";
                    nr++;
                }
                for (j=1;j<=m;j++)
                    if (a[j][1]==i && z[a[j][2]]>0)
                        z[a[j][2]]--;
            //cout<<z[i]<<" ";
            }

    }




    return 0;
}