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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 arr[] = new int[n];
  16. 		int prefixSum[] = new int[n];
  17. 		int sum=0;
  18. 		for(int i=0;i<n; i++){
  19. 			arr[i]=sc.nextInt();
  20. 			sum += arr[i];
  21. 			prefixSum[i]=sum;
  22. 		}
  23.  
  24. 		int q = sc.nextInt();
  25. 		for(int i=0; i<q ; i++){
  26. 			int l = sc.nextInt();
  27. 			int r = sc.nextInt();
  28. 			int num = prefixSum[r]-((l!=0)?prefixSum[l-1]:0);
  29. 			System.out.println(num);
  30. 		}
  31. 	}
  32. }
Success #stdin #stdout 0.11s 56280KB
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stdout
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https://ideone.com/64EepH
language:
Java (HotSpot 12)
created:
16 days ago
visibility:
public

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