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#include <fstream>
using namespace std;
ifstream f("submultimi.in");
ofstream g("submultimi.out");
int n, k;
int s[20];
void tipar(int k)
{
for(int i = 1 ; i <= k ; i++)
g << s[i] << " ";
g << "\n";
}
void bkt(int p)
{
if(p == k+1)
tipar(k);
else
for(int i = s[p-1]+1 ; i <= n-k+1 ; i++)
{
s[p] = i;
bkt(p+1);
}
}
int main()
{
f >> n;
for(k = 1; k <= n; k++)
bkt(1);
return 0;
}