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
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saurabh8522:
2019-07-10 18:50:22
AC in one go !!!!!!!
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namtruong:
2019-06-27 18:35:36
i didn't use bit operations and still got AC :)) Last edit: 2019-06-27 18:35:46 |
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vph12112016:
2019-06-27 16:31:54
if u got TLE, let use bit instead of normal operation.... use k >> 1 instead of k * 2 Last edit: 2019-06-27 16:34:43 |
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sagar_june97p:
2019-05-30 15:40:15
Use static array instead of vector and optimize for not visiting unnecessary nodes while update and query.
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amantu_amir:
2019-04-03 23:10:06
AC after trying about a week,,
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zakir068:
2019-03-30 07:39:58
woho 1st ac with lazy approach
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ab_biswas09:
2019-03-01 21:59:07
AC IN ONE GO !! But nothing really to brag about |
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kshubham02:
2019-02-10 00:25:35
Why do setters keep such time limits which give AC or TLE on the basis of fast IO? If NlogN is expected complexity, then poorer algos (N^2 etc) will timeout even if they make the limit a little less stringent. |
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ada107:
2019-02-07 08:47:47
Tle in java, used fast i/o, any other way to resolve it? |
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tien0903:
2018-11-03 14:37:39
no need prinf and I make three mod =)) |
| Added by: | Varun Jalan |
| Date: | 2010-09-12 |
| Time limit: | 1s |
| Source limit: | 50000B |
| Memory limit: | 1536MB |
| Cluster: | Cube (Intel G860) |
| Languages: | All except: NODEJS OBJC VB.NET |
| Resource: | own problem |
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