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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. 		int k=sc.nextInt();
  17. 		for(int i=1;i<=n;i++)
  18. 		a[i]=sc.nextInt();
  19.  
  20. 		int prefix[]=new int[n+1];
  21. 		int suffix[]=new int[n+1];
  22.  
  23. 		for(int i=1;i<=n;i++)
  24. 		prefix[i]=prefix[i-1]+a[i];
  25.  
  26.  
  27. 		suffix[n]=a[n];
  28.  
  29. 		for(int i=n-1;i>=1;i--)
  30. 		suffix[i]=a[i]+suffix[i+1];
  31.  
  32.  
  33. 		int ans=0;
  34. 		for(int i=1;i<=n-k;i++)
  35. 		{
  36. 			ans=Math.max(ans,(prefix[i]+ suffix[(n-k)+i]));
  37. 		}
  38. 		System.out.println(ans);
  39. 	}
  40. }
Success #stdin #stdout 0.1s 54552KB
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11
https://ideone.com/Wa8coi
language:
Java (HotSpot 12)
created:
7 hours ago
visibility:
public

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