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#include <iostream>
#include <fstream>
using namespace std;
fstream f("submultimi.in"); ofstream g("submultimi.out");
int n,i; int a[20];
void back(int k)
{ int j;
if (k==i) {for(j=1;j<=i;j++) {cout<<a[j]<<' ';} cout<<'\n'; }
else {
for( j=a[k]+1;j<=n;j++)
{
a[k+1]=j;
back(k+1);
}
}
}
int main()
{
f>>n;
a[0]=0;
i=1;
for(i=1;i<=n;i++) {back(0);}
return 0;
}