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#include <iostream>
#include <fstream>
using namespace std;
ifstream fin ("submultimi.in");
ofstream fout("submultimi.out");
int myStack[25];
int N;
void backt()
{
for (int i = 1; i <= myStack[0]; ++i)
fout <<myStack[i] <<' ';
if (myStack[0])
fout <<'\n';
for (int i = myStack[myStack[0]] + 1; i <= N; ++i)
{
myStack[++myStack[0]] = i;
backt();
myStack[myStack[0]] = 0;
--myStack[0];
}
}
int main()
{
fin >>N;
backt();
return 0;
}