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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];
  16. 		Integer [] b=new Integer [n];
  17.  
  18. 		for(int i=0;i<n;i++){
  19. 		    a[i]=sc.nextInt();
  20. 		}
  21. 		for(int i=0;i<n;i++){
  22. 		    b[i]=sc.nextInt();
  23. 		}
  24. 		Arrays.sort(a);
  25. 		Arrays.sort(b,Collections.reverseOrder());
  26.  
  27. 		int mHappy=0;
  28. 		for(int i=0;i<n;i++){
  29. 		    mHappy+=a[i]*b[i];
  30. 		}
  31. 		System.out.println("Max happiness : "+mHappy);
  32. 		sc.close();
  33. 	}
  34. }
Success #stdin #stdout 0.22s 59016KB
comments (?)
stdin 
3
1 8 5
-1 0 80
stdout 
Max happiness : 72
https://ideone.com/ZfuLsJ
language:
Java (HotSpot 12)
created:
10 days ago
visibility:
public

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