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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7. /* Name of the class has to be "Main" only if the class is public. */
  8. class Ideone
  9. {
  10. 	public static void main (String[] args) throws java.lang.Exception
  11. 	{
  12. 		// your code goes here
  13. 		Scanner sc=new Scanner(System.in);
  14. 		int n=sc.nextInt();
  15. 		int a[]=new int[n+1];
  16.  
  17. 		for(int i=1;i<=n;i++)
  18. 		a[i]=sc.nextInt();
  19.  
  20. 		int prefix[]=new int[n+1];
  21. 		for(int i=1;i<=n;i++)
  22. 		prefix[i]=Math.max(a[i],a[i]+prefix[i-1]);
  23.  
  24.  
  25. 		int suffix[]=new int[n+1];
  26. 		suffix[n]=a[n];
  27.  
  28. 		int u[]=new int[n+1];
  29. 		u[n]=suffix[n];
  30. 		int suffixmax[]=new int[n+1];
  31. 		suffixmax[n]=a[n];
  32. 		for(int i=n-1;i>=1;i--)
  33. 		{
  34. 			if(a[i]<a[i+1])
  35. 			suffix[i]=suffix[i+1]+a[i];
  36. 			else
  37. 			suffix[i]=a[i];
  38.  
  39. 			u[i]=Math.max(a[i],suffix[i]);
  40.  
  41. 			suffixmax[i]=Math.max(u[i],suffixmax[i+1]);
  42. 		}
  43.  
  44. 		int ans=0;
  45.  
  46. 		for(int i=1;i<n;i++)
  47. 		{
  48. 			ans=Math.max(ans,prefix[i]+suffixmax[i+1]);
  49. 		}
  50. 		System.out.println(ans);
  51. 	}
  52. }
Success #stdin #stdout 0.18s 56592KB
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https://ideone.com/xlfFlH
language:
Java (HotSpot 12)
created:
6 hours ago
visibility:
public

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