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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 a1[] = new int[n];
  16. 		int a2[] = new int[n];
  17.  
  18. 		for(int i=0; i<n; i++){
  19. 			a1[i] = sc.nextInt();
  20. 		}
  21.  
  22. 		for(int i=0; i<n; i++){
  23. 			a2[i] = sc.nextInt();
  24. 		}
  25.  
  26. 		int dp[] = new int[n];
  27. 		if(n==1){
  28. 			dp[0] = Math.max(a1[0],a2[0]);
  29. 			return;
  30. 		}
  31. 		dp[1] = Math.max(a1[1],a2[1]);
  32.  
  33. 		for(int i=2; i<n; i++){
  34. 			dp[i] = Math.max(Math.max(a1[i],a2[i])+dp[i-2], dp[i-1]);	
  35. 		}
  36.  
  37. 		System.out.println(dp[n-1]);
  38.  
  39. 	}
  40. }
Success #stdin #stdout 0.18s 54704KB
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4
1 5 3 21234
-4509 200 3 40
stdout
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21434
https://ideone.com/d0TJVM
language:
Java (HotSpot 12)
created:
11 days ago
visibility:
public

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