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

Added by:Iqram Mahmud
Date:2010-12-04
Time limit:2.329s
Source limit:50000B
Memory limit:1536MB
Cluster: Cube (Intel G860)
Languages:All except: ASM64
Resource:Own. Thanks to Emir Habul.

hide comments
2016-09-10 09:47:45 munjal
make sure that 1) use long in java.
2) while doing multiplication (end-start+1)*tree[node] , make it long. i.e. (long)((end-start+1)*tree[node]) .
2016-08-30 21:30:03
The limits given are correct.
2016-08-23 20:44:50
you have to increase the size of the segment tree , if you'r using one ,
i'v got WA with segment tree of 4*100'000 and AC with 4*1'000'000
2016-08-19 19:33:02
if you trying using BIT do this first
http://www.spoj.com/problems/UPDATEIT/
2016-08-10 17:06:37
Awesome Question
2016-08-04 10:24:41
only BIT :v
2016-07-30 14:31:15
For each test case update whole lazy array to zero(2*100000)
2016-07-25 11:53:21 devender issar
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 ?
2016-07-24 14:50:24 liuxueyang
@Dushyant Singh Thank you so much. :-)
2016-07-24 01:38:59 akshayv3
SQRT Decomposition+BIT (AC)
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