following items, especially model comparisons and visualizations, are very helpful, and can be made up when they are empty.6. Feature expansion7. Main formation Analysis dimensionality reduction8. Normalization9. Model Data Comparison9.1 K-Fold Model Prediction Data graph (graph of predicted and real values)9.2 K-Fold Model Prediction Data graph (graph of predic
, 5th million downloads, 40 thousand million downloads, and 10th million downloads. The champion of the South Korean download list downloads 6600 times a day, 5th million, 3300 million, and 10th million.
Google Play platform: the champion of the download list in Japan downloads 52 thousand times a day, 5th downloads 32 thousand times, 10th downloads 17 thousand times. The champion of the South Korean download list downloads 55 thousand times a day, 5th million, 32 thousand million, and 10th mill
NYOJ-541-strongest DE combat power (the fifth Henan Programming Competition-Big Data !!)
Strongest DE fighting time limit: 1000 MS | memory limit: 65535 KB difficulty: 3
During the Spring and Autumn Period and the Warring States Period, Zhao Guo made great achievements in land and resources, and the people lived and operated in peace. However, many countries are eager to join in launching a war against Zhao
At first, I thought it was a brute force attack. Later I saw the data range and thought it was necessary to implement FFT. I was abused by various types of attacks. Then, the orz seter was a Great God !!!
I only want the first three digits: a * B
Then the last nine digits are used:
Seter: "For Prime Number A, in N! N/A + N/A ^ 2 +... times"
So C (m, n) = n! /M! /(N-m )! You can find the number of occurrences of each prime factor!
1 /***************
Question link: http://acm.hdu.edu.cn/showproblem.php? PID = 1, 5047
Solution Report: Ask a "M" type to divide the plane of a rectangle into a maximum of several blocks.
The input has n "M". Now the formula is 8 * n ^ 2-7 * n + 1, but the range of N is 10 ^ 12, as long as the square is within the range of long, what should we do with a large number?
I 've tried it all. It's strange that it will time out. I don't think it will happen according to estimation. Maybe it's because the intermediate res
2015 whu school competition f question big data (dp + Tips), 2015whu
Given five numbers of n (n
The solution is as follows:
There is an error in the image. The result is a * (n + 1) * n instead of (B-a) * (n + 1) * n. In addition, pay attention to the problem of rounded up and rounded down in x/c.
This question has been suspended for a month. Today, I have finally found the time for ac. It's a little touc
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