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#include<fstream>
#include<vector>
using namespace std;
ifstream f("sortaret.in");
ofstream g("sortaret.out");
int nr, n, m,dmin[50001];
bool viz[50001];
vector <int> v[50001];
void citire()
{
int i,x,y;
f>>n>>m;
for(i=1;i<=m;i++)
{
f>>x>>y;
v[x].push_back(y);
dmin[y]++;
}
}
void sortare()
{
int i,j;
nr=0;
while(nr<n)
{
for(i=1;i<=n;i++)
{
if(dmin[i]==0&&!viz[i])
{
g<<i<<" ";
viz[i]=1;
nr++;
for(j=0;j<v[i].size();j++)
{
dmin[v[i][j]]--;
}
}
}
}
}
int main()
{
citire();
sortare();
f.close();
g.close();
return 0;
}