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JZPFOR - Formula 3D |
There are n lattice points in the 3D space. One point can get to another if and only if their Euclid distance is 1. Find out the number of simple cycles (that has length > 2). The number of points with same x coordinates do not exceed 8.
Input
First line, n.
Following are n lines, each describes one point, no two points share same coordinates.
n<=400, coordinates in range [-10^9, 10^9] (inclusive).
Output
One number, the required answer mod 1000000007.
Example
Input: 8 0 0 0 0 0 1 0 1 0 0 1 1 1 0 0 1 0 1 1 1 0 1 1 1 Output: 28
Added by: | sevenkplus |
Date: | 2011-06-29 |
Time limit: | 0.100s |
Source limit: | 50000B |
Memory limit: | 1536MB |
Cluster: | Cube (Intel G860) |
Languages: | All |
Resource: | own problem |
hide comments
2022-08-23 11:50:39 [Rampage] Blue.Mary
In my opinion this kind of problem should use multiple test cases and longer time limit rather than 0.1 second for each test. |