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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. 		for(int i=1;i<=n;i++)
  17. 		a[i]=sc.nextInt();
  18.  
  19. 		int suffix[]=new int[n+1];
  20. 		suffix[n]=1;
  21. 		for(int i=n-1;i>=1;i--)
  22. 		{
  23. 			if(a[i]<a[i+1])
  24. 			suffix[i]=suffix[i+1]+1;
  25. 			else
  26. 			suffix[i]=1;
  27. 		}
  28.  
  29. 		int prefix=0;
  30. 		int val=0;
  31. 		int sum=0;
  32. 		for(int i=1;i<=n;i++)
  33. 		{
  34. 			if(prefix>a[i])
  35. 			val++;
  36. 			else
  37. 			val=1;
  38.  
  39. 			sum+= (val-1)*(suffix[i]-1);
  40. 			prefix=a[i];
  41. 		}
  42. 		System.out.println(sum);
  43.  
  44. 	}
  45. }
Success #stdin #stdout 0.11s 54536KB
comments (?)
stdin 
4
5 3 4 8
stdout 
2
https://ideone.com/dDUSlR
language:
Java (HotSpot 12)
created:
9 hours ago
visibility:
public

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