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#include <fstream>
#include <vector>
#define pb push_back
using namespace std;
ifstream fin("sortaret.in");
ofstream fout("sortaret.out");
int n, m, x, y, ok, nr, gri[50005];
vector <int> L[50005], niv;
int main()
{
int i,j;
fin >> n >> m;
for (i = 1; i <= m; i++)
{
fin >> x >> y;
for (j = 0,ok=1; j < L[x].size(); j++)
if (L[x][j] == y)
{
ok = 0;
break;
}
if (ok)
{
L[x].pb(y);
gri[y]++;
}
}
while (nr < n)
{
for (i = 1; i <= n; i++)
{
if (!gri[i])
{
niv.pb(i);
fout << i << ' ';
nr++;
gri[i]--;
}
}
for (i = 0; i < niv.size(); i++)
{
for (j = 0; j < L[niv[i]].size(); j++)
gri[L[niv[i]][j]]--;
}
}
return 0;
}