#include <iostream>
#include <vector>
#include <fstream>
#define N_MAX 100001

using namespace std;

ifstream f("sortaret.in");
ofstream g("sortaret.out");

vector<int> gr[N_MAX];
int nrFii[N_MAX], n, m, ordonare[N_MAX], aux;

int main(){

f>>n>>m;
for(int i=1; i<=m; i++){

int x, y;
f>>x>>y;
gr[x].push_back(y);
nrFii[x]++;

}

aux=n;

while(n){

for(int i=1; i<=aux; i++){

    if(nrFii[i] == 0){

        ordonare[n]=i;
        n--;
        nrFii[i]--;
     for(int j=1; j<=aux; j++)
         for(auto k: gr[j])
             if(k == i)
                 nrFii[j]--;
        }


}

}

for(int i=1; i<=aux; i++)
    g<<ordonare[i]<<" ";

}