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#include <fstream>
using namespace std;
ifstream f ("submultimi.in");
ofstream g ("submultimi.out");
int i,n,sol[50],a[50],m,pus[50];
void afis (int k)
{
int i;
for(i=1; i<=k; i++)
g<<a[sol[i]]<<" ";
g<<'\n';
}
void back (int k)
{
int i;
if(k<=n)
for(i=sol[k-1]+1;i<=n;i++)
{
sol[k]=i;
afis(k);
back(k+1);
}
}
int main()
{
f>>n;
for(i=1; i<=n; i++)
a[i]=i;
back(1);
return 0;
}