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#include<iostream>
#include<fstream>
using namespace std;
int n,v[100],k;
ifstream f("submultimi.in");
ofstream g("submultimi.out");
void init(){v[k]=-1;}
//nu avem conditie
int solutie(){return (k==n);}
void afisare()
{ for(int i=1;i<=k;i++)
{if(v[i]==1)g<<i<<" ";}
g<<'\n';}
void bt()
{
k=1;
init();
while(k>0)
{ while(v[k]<1)
{
v[k]++;
if(solutie())afisare();
else{k++;init();} //acest else este de la ultimul if(de la solutie)
}
k--;
}
}
int main()
{
f>>n;
bt();
return 0;
}