#include <fstream>
#include <vector>

using namespace std;

#define Amax 50001

ifstream fi("sortaret.in");
ofstream fo("sortaret.out");

int i,n,m,gr[Amax],l[Amax]; vector<int> G[Amax];

void readData(){
	int a,b;
	
	fi >> n >> m;
	for (i=1; i<=m; i++)
		fi >> a >> b, G[a].push_back(b), gr[b]++;
}

void solve(){
	int x; vector<int>::iterator it; 
	
	for (i=1; i<=n; i++) if (!gr[i]) l[++l[0]]=i;

	for (i=1; i<=n; i++){
		x=l[i];
		for (it=G[x].begin(); it != G[x].end(); it++){
			gr[*it]--; if (!gr[*it]) l[++l[0]]=*it;
		}
	}
}

void writeData(){
	for (i=1; i<=n; i++) fo << l[i] << " ";
}

int main(){
	
	readData();
	solve();
	writeData();
	
	return 0;
}