a53

MinPal

a53
Dec 28th, 2019
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0
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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int v[1000000],n,ans;
  5.  
  6. int main()
  7. {
  8. cin>>n;
  9. for(int i=0;i<n;i++)
  10. cin>>v[i];
  11. for (int i=0,j=n-1; i<=j;)
  12. {
  13. if (v[i] == v[j])
  14. {
  15. i++;
  16. j--;
  17. }
  18. else if (v[i] > v[j])
  19. {
  20. j--;
  21. v[j] += v[j+1] ;
  22. ans++;
  23. }
  24. else
  25. {
  26. i++;
  27. v[i] += v[i-1];
  28. ans++;
  29. }
  30. }
  31. cout<<ans;
  32. return 0;
  33. }
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