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Feb 24th, 2020
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  1. #include <iostream>
  2.  
  3. using namespace std;
  4. int matrice[101][101],caract[1000001];
  5. int linii,col,i,j;
  6. int main()
  7. {
  8. cin>>linii>>col;
  9. for(i=1;i<=linii;i++)
  10. for(j=1;j<=col;j++)
  11. cin>>matrice[i][j];
  12. //elementele de pe prima sau ultima coloana
  13. for(i=1;i<=linii;i++)
  14. {
  15. caract[matrice[i][1]]=1;
  16. caract[matrice[i][col]]=1;
  17. }
  18. for(i=1;i<=col;i++)
  19. {
  20. caract[matrice[1][i]]=1;
  21. caract[matrice[linii][i]]=1;
  22. }
  23. for(i=1;i<=1000000;i++)
  24. if(caract[i]==1)
  25. cout<<i<<" ";
  26. return 0;
  27. }
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