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#include <iostream>
#include <queue>
#include <fstream>
using namespace std;
ifstream fin("sortaret.in");
ofstream fout("sortaret.out");
int grad[100001];
int a[10001][10001];
int viz[100001];
int main()
{
int n,m,i,j,x,y,k;
fin>>n>>m;
for(i=1;i<=m;i++)
{
fin>>x>>y;
a[x][y]=1;
grad[y]++;
}
for(i=1;i<=n;i++)
for(j=1;j<=n;j++)
{
if(viz[j]==0 && grad[j]==0)
{
viz[j]=1;
fout<<j<<" ";
for(k=1;k<=n;k++)
{
if(a[j][k]==1)
grad[k]--;
}
}
}
return 0;
}