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Mar 26th, 2019
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  1. #include <iostream>
  2. using namespace std;
  3. int n,m,v[20],i;
  4. char c[4][10];
  5. int valid(int k);
  6. int solutie(int k);
  7. void afisare(int k);
  8. void BK(int k);
  9.  
  10. int main(){
  11. cout<<"n=";
  12. cin>>n;
  13. cout<<"m=";
  14. cin>>m;
  15. for(int i=0;i<=n;i++)
  16. cin.getline(c[i],10);
  17. BK(1);
  18. }
  19.  
  20. void BK(int k){
  21. int i;
  22. for(int i=1; i<=n; i++){
  23. v[k]=i;
  24. if(valid(k)){
  25. if(solutie(k))
  26. afisare(k);
  27. else
  28. BK(k+1);
  29. }
  30. }
  31. }
  32.  
  33. int valid(int k){
  34. int i;
  35. for(i=1;i<=k-1;i++)
  36. if(v[i]==v[k])
  37. return 0;
  38. return 1;
  39. }
  40.  
  41. int solutie(int k){
  42. if(k==m)
  43. return 1;
  44. return 0;
  45. }
  46.  
  47. void afisare(int k){
  48. int i;
  49. for(i=1;i<=k;i++)
  50. cout<<c[v[i]]<<" ";
  51. cout<<endl;
  52. }
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