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#include <iostream>
#include <fstream>
using namespace std;
fstream in("combinari.in",ios::in);
fstream out("combinari.out",ios::out);
int n,a[100]={},sf=1;
void back(int);
int main()
{
in>>n;
back(1);
return 0;
}
void back(int k)
{
int i;
if(k==n+1)
{
for(i=1;i<=n;i++)
if(a[i]==1)
out<<i<<" ";
out<<"\n";
}
else
{
a[k]=-1;
while(a[k]<1)
{
a[k]++;
back(k+1);
}
}
}