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#include<iostream>
#include<fstream>
using namespace std;
ifstream fin ("submultimi.in");
ofstream fout ("submultimi.out");
int n,a[100];
bool verificare( int k)
{
for( int j=1;j<k;j++)
if( a[j]==a[j+1])
return false ;
else if( a[j]>a[j+1])
return false;
return true;
}
void afisare ( int l)
{
for( int i=1;i<=l;i++)
fout<<a[i]<<" ";
fout<<endl;
}
void combinari(int k)
{
for (int i=k ;i<=n;i++)
{
a[k]=i;
if( verificare(k))
afisare(k);
combinari(k+1);
}
}
int main()
{
cin>>n;
combinari(1);
}