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edutedu

varianta 25

Nov 25th, 2018
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  1. #include <iostream>
  2.  
  3. using namespace std;
  4. void f(int n, int a[100], int &k)
  5. {
  6. int i, p=1, impar=1;
  7. for(i=0; i<n ; i++)
  8. if(a[i]%2!=0)
  9. impar++;
  10. if(impar==n)
  11. k=-1;
  12. else
  13. {
  14. k=0;
  15. for(i=0; i<n; i++)
  16. {
  17. if(a[i]%2==0)
  18. {
  19. k=a[i]*p+k;
  20. p=p*10;
  21. }
  22. }
  23. }
  24.  
  25. }
  26. int main()
  27. {
  28. int n, a[100], k, i;
  29. cin>>n;
  30. for(i=0; i<n; i++)
  31. cin>>a[i];
  32. f(n, a, k);
  33. cout<<k;
  34. return 0;
  35. }
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