#include <cstdio>
#include <vector>
#define nmax 50005

using namespace std;

int n,m,gr[nmax],q[nmax],ct;
vector<int> v[nmax];


void citire()
{
    int i,x,y;
    scanf("%d%d",&n,&m);
    for(i=1;i<=m;i++)
        {
            scanf("%d%d",&x,&y);
            v[x].push_back(y);
            gr[y]++;
        }
}

void rez()
{
    int i,x,j,vc;
    for(i=1;i<=n;i++)
        if(!gr[i])
           q[++ct]=i;
    for(i=1;i<=n;i++)
        {
            x=q[i];
            for(j=0;j<v[x].size();j++)
                {
                    vc=v[x][j];
                    gr[vc]--;
                    if(gr[vc]==0)
                       q[++ct]=vc;
                }
        }
}

void afis()
{
    int i;
    for(i=1;i<=n;i++)
        printf("%d ", q[i]);
}

int main()
{
    freopen("sortaret.in","r",stdin);
    freopen("sortaret.out","w",stdout);

    citire();
    rez();
    afis();

    return 0;
}