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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. 	static int digcount(int n)
  11. 	{
  12. 		int ans=0;
  13. 		while(n!=0)
  14. 		{
  15. 			n/=10;
  16. 			ans++;
  17. 		}
  18. 		return ans;
  19. 	}
  20. 	public static void main (String[] args) throws java.lang.Exception
  21. 	{
  22. 		// your code goes here
  23. 		Scanner sc=new Scanner(System.in);
  24. 		int n=sc.nextInt();
  25. 		int b[]=new int[n+1];
  26.  
  27. 		for(int i=1;i<=n;i++)
  28. 		b[i]=sc.nextInt();
  29.  
  30. 		int ans=0;
  31. 		int sum=0;
  32. 		for(int j=1;j<=n;j++)
  33. 		{
  34. 			int temp=digcount(b[j]);
  35. 			int val=(j-1)*b[j] +(sum * (int) (Math.pow(10,temp)));
  36. 			ans+=val;
  37. 			sum+=b[j];
  38. 		}
  39.  
  40. 		System.out.println(ans);
  41.  
  42.  
  43. 	}
  44. }
Success #stdin #stdout 0.14s 56572KB
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https://ideone.com/CutkqT
language:
Java (HotSpot 12)
created:
4 days ago
visibility:
public

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