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#include<fstream>
using namespace std;
ifstream fin("sortaret.in");
ofstream fout("sortaret.out");
int k,sortat[10001],n,i,a[10001][10001],x,y,ajung[10001],viz[10001],m;
void dfs(int x)
{
for(int i=1;i<=n;i++)
{
if(a[x][i] && !viz[i])
{
viz[i]=1;
dfs(i);
}
}
sortat[++k]=x;
}
int main()
{
fin>>n>>m;
for(i=1;i<=m;i++)
{
fin>>x>>y;
a[x][y]=1;
ajung[y]++;
}
for(i=1;i<=n;i++)
if(!ajung[i])
{
k=0;
viz[i]=1;
dfs(i);
}
for(i=n;i>0;i--)
fout<<sortat[i]<<" ";
return 0;
}