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#include <iostream>
#include <fstream>
using namespace std;
int n, v[20];
fstream g("submultimi.out", ios::out);
void print(int k)
{
int i;
for(i = 0 ; i < k ; i++)
g << v[i] << " ";
g << endl;
}
void BKT(int k, int lst)
{
int i;
for(i = lst; (i <= n) && k <= n ; i++)
{
v[k-1] = i;
print(k);
BKT(k + 1, i + 1);
}
}
int main()
{
fstream f("submultimi.in", ios::in);
f >> n;
BKT(1, 1);
return 0;
}