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Cod sursa(job #920830)
#include <iostream>
#include <fstream>
using namespace std;
int st[17], n;
ifstream f("submultimi.in");
ofstream g("submulimi.out");
void tip(int k)
{
int i;
for (i=1; i<=k; i++)
g<<st[i]<<" ";
g<<"\n";
}
void back(int k)
{
int i;
for (i=st[k-1]+1; i<=n; i++)
{
st[k]=i;
tip(k);
//back(k+1);
back(k+1);
}
}
int main()
{
f>>n;
st[0]=0;
back(1);
g.close();
return 0;
}