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#include <iostream>
#include <fstream>
using namespace std;
ifstream f("submultimi.in");
ofstream g("submultimi.out");
int v[20];
bool ok[20];
void afis(int m)
{
for(int i = 1 ; i <= m;i++)
g<<v[i]<<" ";
g<<"\n";
}
void beck(int k,int n)
{
if(v[1] != 0)
afis(k);
for( int i = v[k] + 1; i <= n ;i++)
{
v[k+1] = i;
beck(k+1,n);
}
}
int main()
{
int n;
f>>n;
beck(0,n);
return 0;
}