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- #include <iostream>
- using namespace std;
- int sol, n, x[100];
- void init(int k)
- {
- x[k]=-1;
- }
- int existaSuccesor(int k)
- {
- return x[k]<1;
- }
- int cont(int k)
- {
- return 1;
- }
- int solutie(int k)
- {
- return k==n;
- }
- void tipar()
- {
- sol++;
- for(int i=1; i<=n; i++)
- {
- if(x[i])
- cout<<i<<" ";
- }
- cout<<endl;
- }
- void back()
- {
- int k=1;
- init(1);
- while(k>0)
- {
- if(existaSuccesor(k))
- {
- x[k]++;
- if(cont(k))
- if(solutie(k))
- tipar();
- else
- {
- k++;
- init(k);
- }
- }
- else
- k--;
- }
- }
- int main()
- {
- cout<<"Cate cadouri sunt? "; cin>>n;
- cout<<"Submultimile de cadouri sunt: "<<endl;
- back();
- cout<<"Sunt "<<sol<<" submultimi";
- return 0;
- }
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