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Jan 16th, 2019
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  1. #include <iostream>
  2.  
  3. using namespace std;
  4. int tudor(int a[], int st, int dr)
  5. {
  6. int s=0, m=(st+dr)/2;
  7. if(dr-st<1) return a[dr];
  8. return tudor(a,st,m)+tudor(a,m+1,dr);
  9. }
  10. int main()
  11. {
  12. int n, i, a[10000];
  13.  
  14. cin>>n;
  15. for(int i=1;i<=n;i++)
  16. cin>>a[i];
  17. cout<<tudor(a,1,n);
  18.  
  19. return 0;
  20. }
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