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Oct 15th, 2019
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  1. #include<iostream>
  2. using namespace std;
  3. int A[101][101],n,m,grade[100];
  4. void citire()
  5. {
  6. cin>>n>>m;
  7. for(i=1; i<=m; i++)
  8. {
  9. fin>>x>>y;
  10. A[x][y]=1;
  11. }
  12. }
  13. int grad_intern(int x)
  14. {
  15. int i,gradin=0;
  16. for(i=1; i<=1; i++)
  17. gradin=gradin+A[i][x];
  18. return gradin;
  19. }
  20. int main()
  21. {
  22. int i;
  23. citire();
  24. for(i=1; i<=n; i++)
  25. if(grad_intern(i)==0)
  26.  
  27. {
  28. cout<<i<<' ';
  29. ok=1;
  30.  
  31. }
  32. if(ok==0)
  33. cout<<"NU EXISTA";
  34. }
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