MATSUM - Matrix Summation
A N × N matrix is filled with numbers. BuggyD is analyzing the matrix, and he wants the sum of certain submatrices every now and then, so he wants a system where he can get his results from a query. Also, the matrix is dynamic, and the value of any cell can be changed with a command in such a system.
Assume that initially, all the cells of the matrix are filled with 0. Design such a system for BuggyD. Read the input format for further details.
Input
The first line of the input contains an integer t, the number of test cases. t test cases follow.
The first line of each test case contains a single integer N (1 <= N <= 1024), denoting the size of the matrix.
A list of commands follows, which will be in one of the following three formats (quotes are for clarity):
- "SET x y num" - Set the value at cell (x, y) to num (0 <= x, y < N).
- "SUM x1 y1 x2 y2" - Find and print the sum of the values in the rectangle from (x1, y1) to (x2, y2), inclusive. You may assume that x1 <= x2 and y1 <= y2, and that the result will fit in a signed 32-bit integer.
- "END" - Indicates the end of the test case.
Output
For each test case, output one line for the answer to each "SUM" command. Print a blank line after each test case.
Example
Input: 1 4 SET 0 0 1 SUM 0 0 3 3 SET 2 2 12 SUM 2 2 2 2 SUM 2 2 3 3 SUM 0 0 2 2 END Output: 1 12 12 13
hide comments
Opu:
2016-04-06 10:52:46
I used long long and got ac and took .69s. @Whatever. |
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:.Mohib.::
2016-02-24 13:41:25
Awesome question...!! |
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minhthai:
2016-01-11 12:53:46
in java, bit2d gives tle @_@ |
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xxbloodysantaxx:
2015-12-08 17:44:45
its SET not update !
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Kraken:
2015-09-12 21:18:06
using n log log get tle , Lol |
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7Bubble:
2015-08-30 09:20:37
rang.. U confused me. |
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(Tjandra Satria Gunawan)(曾毅昆):
2015-07-28 22:08:10
[!] there are negative numbers on input :-o |
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Whatever:
2015-06-11 13:43:36
Use int , long long gave me WA |
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Rang:
2015-06-02 20:22:38
its SET not update ! |
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Rajat De:
2015-03-10 11:12:04
Beware , the numbers can be negative too. costed me several WAs |
Added by: | Matthew Reeder |
Date: | 2006-10-29 |
Time limit: | 1.029s |
Source limit: | 30000B |
Memory limit: | 1536MB |
Cluster: | Cube (Intel G860) |
Languages: | All except: ERL JS-RHINO NODEJS PERL6 VB.NET |
Resource: | Al-Khawarizm 2006 |