/*
    Look at me!
    Look at me!
    The monster inside me has grown this big!
*/

#include<fstream>
#include<iostream>
#include<cstdio>
#include<map>
#include<set>
#define FIT(a,b) for(vector<int >::iterator a=b.begin();a!=b.end();a++)
#define RIT(a,b) for(vector<int>::reverse_iterator a=b.end();a!=b.begin();++a)
#include<stack>
#define ROF(a,b,c) for(int a=b;a>=c;--a)
#include<vector>
#include<algorithm>
#define FOR(a,b,c) for(int a=b;a<=c;++a)
#define REP(a,b) for(register int a=0;a<b;++a)
#include<cstring>
#include<bitset>
#include<cmath>
#include<iomanip>
#include<queue>
#define debug cerr<<"OK";
#define pii pair<int,int>
#define mp make_pair
#define pb push_back
#define fi first
#define se second
#define ll long long
#define ull unsigned long long
#define eps 1.e-6
#define N 105
using namespace std;
/*int dx[]={0,0,0,1,-1};
int dy[]={0,1,-1,0,0};*/
ifstream f("sortaret.in");
ofstream g("sortaret.out");
queue<int> q;
vector<int> v[N];
int n,m,gr[N],x,y;
int main ()
{
	f>>n>>m;
	FOR(i,1,m)
	{
		f>>x>>y;
		v[x].pb(y);
		gr[y]++;
	}
	FOR(i,1,n)
	if(!gr[i])
	q.push(i);
	while(!q.empty())
	{
		x=q.front();
		g<<x<<" ";
		q.pop();
		FIT(it,v[x])
		{
			gr[*it]--;
			if(!gr[*it])
			q.push(*it);
		}
	}
	return 0;
}