HORRIBLE - Horrible Queries


World is getting more evil and it's getting tougher to get into the Evil League of Evil. Since the legendary Bad Horse has retired, now you have to correctly answer the evil questions of Dr. Horrible, who has a PhD in horribleness (but not in Computer Science). You are given an array of N elements, which are initially all 0. After that you will be given C commands. They are -

* 0 p q v - you have to add v to all numbers in the range of p to q (inclusive), where p and q are two indexes of the array.

* 1 p q - output a line containing a single integer which is the sum of all the array elements between p and q (inclusive)

 

Input

In the first line you'll be given T, number of test cases.

Each test case will start with N (N<=100 000) and C (C<=100 000). After that you'll be given C commands in the format as mentioned above. 1 <= p,q <= N and 1 <= v <= 10^7.

Output

Print the answers of the queries.

Example

Input:
1
8 6
0 2 4 26
0 4 8 80
0 4 5 20
1 8 8
0 5 7 14
1 4 8

Output:
80
508




hide comments
devender issar: 2016-07-25 11:53:21

I think input limits are wrong , looks like n can go beyond 100000 also.
And why in this question we need to reset the complete lazy and sum array to avoid wrong answer ?

liuxueyang: 2016-07-24 14:50:24

@Dushyant Singh Thank you so much. :-)

akshayv3: 2016-07-24 01:38:59

SQRT Decomposition+BIT (AC)

Dushyant Singh: 2016-07-22 15:31:23

@liuxueyang: v <= 10^7 and N<=10^5. That makes sum<=10^12 which will not fit in int.

liuxueyang: 2016-07-22 13:50:20

problem says: v <= 10^7, however, you must declare it long long.. don't know why... ;-(

Punit Bhatt: 2016-07-10 15:42:07

Can anyone help me out? I have tried solving this problem using ST and Lazy Prop. but everytime I end up getting WA. Can someone please tell me what is wrong in this code? Thnx
http://ideone.com/RZkepH

faceless_man: 2016-06-27 17:40:26

segment tree + lazy propagation .. solution given in hackerearth

janvijay1997: 2016-06-17 07:35:02

Used Dynamic Node Allocation + Lazy Propagation ! :)

SANDEEP KUMAR: 2016-01-25 13:41:11

Got AC(0.73 s), used cin and cout,no problemm.its all about your coding style..and yes remember to reset the arrays after each test cases...(which i realised after 4 WA's)

Deepak : 2016-01-21 22:31:23

done with BIT..but still not confident with it


Added by:Iqram Mahmud
Date:2010-12-04
Time limit:2.329s
Source limit:50000B
Memory limit:1536MB
Cluster: Cube (Intel G860)
Languages:All
Resource:Own. Thanks to Emir Habul.