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#include <iostream>
#include <queue>
#include <vector>
#include <fstream>
using namespace std;
ifstream f("sortaret.in");
ofstream g("sortaret.out");
int n, m ,q, t[50010], viz[50010], x, y;
vector<int> a[50010];
void dfs(int varf)
{
viz[varf]=1;
for(int i=0; i<a[varf].size(); i++){
if(!viz[a[varf][i]])
dfs(a[varf][i]);
}
t[q]=varf;
q--;
}
int main()
{
f>>n>>m;
while(m--)
{
f>>x>>y;
a[x].push_back(y);
}
q=n;
for(int i=1;i<=n;i++)
{
if(!viz[i])
dfs(i);
}
for(int i=1; i<=n; i++)
{
g<<t[i]<<" ";
}
return 0;
}