MULTQ3  Multiples of 3
There are N numbers a[0], a[1] ... a[N  1]. Initially all are 0. You have to perform two types of operations :
 Increase the numbers between indices A and B (inclusive) by 1. This is represented by the command "0 A B"
 Answer how many numbers between indices A and B (inclusive) are divisible by 3. This is represented by the command "1 A B".
Input
The first line contains two integers, N and Q. Each of the next Q lines are either of the form "0 A B" or "1 A B" as mentioned above.
Output
Output 1 line for each of the queries of the form "1 A B" containing the required answer for the corresponding query.
Sample
Input: 4 7 1 0 3 0 1 2 0 1 3 1 0 0 0 0 3 1 3 3 1 0 3 Output: 4 1 0 2
Constraints
1 ≤ N ≤ 100000
1 ≤ Q ≤ 100000
0 ≤ A ≤ B ≤ N  1
hide comments
अमूल्य:
20140122 16:38:51
failing at 9th test case please share some test cases 

Shakil Ahmed:
20131105 11:20:05
Very interesting problem !


Shreyans:
20130921 15:05:04
Getting WA in 9th case, though simple algorithm and though using fast I/P, O/P by fread and write after putting in buffer. Is there any tricky case? Last edit: 20131119 13:09:01 

Akhilesh Anandh:
20130919 12:09:48
Went from TLE to AC by inlining functions and using fast i/o. @ProblemSetter: I suggest increasing the time limit so that this does not need to be done.


Haytham Breaka:
20130726 23:32:39
no need for inline functions or getchar_unlocked() just optimized code will pass 

on the hell:
20130721 08:51:01
i hate such time limits ...


BLANKRK:
20130714 11:22:06
finaly done!!! after lots of tle's ,WA's n runtym error's.....:P 

ErtiChris Eelmaa:
20130714 07:44:36
Don't use long long's(not that you need, but I copy/pasted solution from my previous problem, and forget to change them)  costed me few TLE's. 

Chandan Singh:
20130702 19:03:51
getting tle at 9th test case, i have used getchar_unlocked for faster i/o anything else i can do to get rid of tle ? 

jalaj:
20130607 09:05:33
no need of fast i/o.. 
Added by:  Varun Jalan 
Date:  20100912 
Time limit:  1s 
Source limit:  50000B 
Memory limit:  1536MB 
Cluster:  Cube (Intel G860) 
Languages:  All except: NODEJS OBJC VB.NET 
Resource:  own problem 