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Cod sursa(job #487720)
#include<fstream>
using namespace std;
ifstream fin("submultimi.in");
ofstream fout("submultimi.out");
int a[17], n, p;
void afisare();
void back(int);
int main()
{
fin >> n;
for(p = 1; p <= n; p++)
back(1);
fin.close();
fout.close();
}
void afisare()
{
for (int i = 1 ; i <= p; i++ )
fout << a[i] <<" ";
fout << '\n';
}
void back(int k)
{
if(k>p)
afisare();
else
{
for(int i = a[k-1]+1; i <= n-p+k; i++)
{
a[k]=i;
back(k+1);
a[k]=0;
}
}
}