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Dec 12th, 2019
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  1. #include <iostream>
  2.  
  3. using namespace std;
  4.  
  5. void citire(int a[], int n)
  6. {
  7. for(int i=0;i<n;i++)
  8. cin>>a[i];
  9. }
  10.  
  11.  
  12. void F(int n, int a[], int &k)
  13. {
  14. for(int i=0;i<n;i++)
  15. {
  16. if(a[i]%2==0)
  17. k=k*10+a[i];
  18. }
  19. if(k==0)
  20. k=-1;
  21. }
  22.  
  23. int main()
  24. {int n, a[100], k=0;
  25. cin>>n;
  26. F(n,a,0);
  27. cout<<k;
  28. return 0;
  29. }
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