#include<fstream>
#include<vector>


using namespace std;

ifstream fin("sortaret.in");
ofstream fout("sortaret.out");

vector<int>v[50001];

int grad[50001],q[100001],k=1;

int main () {
int n,m,x,y,i=1;
fin>>n>>m;
for(i=1;i<=m;i++){
    fin>>x>>y;
    v[x].push_back(y);
    grad[y]++;
}

for(i=1;i<=n;i++)
    if(grad[i]==0){
        q[k]=i;
        k++;
}
for(i=1;i<=n;i++){
    for(int j=0;j<v[q[i]].size();j++){
        grad[v[q[i]][j]]--;
        if(grad[v[q[i]][j]]==0){
            q[k]=v[q[i]][j];
            k++;
        }
    }

}
for(i=1;i<=n;i++)
    fout<<q[i]<<" ";

return 0;
}