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- #include <fstream>
- #include <cstdlib>
- using namespace std;
- ifstream cin("submultimi.in");
- ofstream cout("submultimi.out");
- int X[10], n;
- void afisare(int k)
- {
- for(int i=1; i<=k; i++)
- cout<<X[i]<<" ";
- cout<<endl;
- }
- int verif(int k)
- {
- for(int i=2; i<=k; i++)
- if(abs(X[i]-X[i-1])<=1) return 0;
- return 1;
- }
- void back(int k)
- {
- for(int i=X[k-1]+1; i<=n; i++)
- {
- X[k]=i;
- if(verif(k)==1)
- afisare(k);
- back(k+1);
- }
- }
- int main()
- {
- cin>>n;
- back(1);
- return 0;
- }
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