#include<fstream>
#include<vector>
#define dim 50002
using namespace std;


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

vector< int >G[dim];
int n,m,i,j,Q[dim],grad[dim],x,y,k,t;
int main (){
	
	f>>n>>m;
	
	for(i=1;i<=m;++i){
		f>>x>>y;
		G[x].push_back(y);
		grad[y]++;
	}
	for(i=1;i<=n;++i){
		if(grad[i]==0){
			Q[++k]=i;
		}
	}
	for(i=1;i<=n;++i){
		x=Q[i];
		for(int j=0;j<G[x].size();++j){
			t=G[x][j];
			--grad[t];
			if(grad[t]==0){
				Q[++k]=t;
			}
		}
	}
	
	for(i=1;i<=n;++i){
		g<<Q[i]<<" ";
	}
	
	return 0;
}