What is the proof of Editorial Solution of this problem? http://community.topcoder.com/stat?c=problem_statement&pm=13090&rd=15848
# | User | Rating |
---|---|---|
1 | tourist | 4009 |
2 | jiangly | 3831 |
3 | Radewoosh | 3646 |
4 | jqdai0815 | 3620 |
4 | Benq | 3620 |
6 | orzdevinwang | 3529 |
7 | ecnerwala | 3446 |
8 | Um_nik | 3396 |
9 | gamegame | 3386 |
10 | ksun48 | 3373 |
# | User | Contrib. |
---|---|---|
1 | cry | 164 |
1 | maomao90 | 164 |
3 | Um_nik | 163 |
4 | atcoder_official | 160 |
5 | -is-this-fft- | 158 |
6 | awoo | 157 |
7 | adamant | 156 |
8 | TheScrasse | 154 |
8 | nor | 154 |
10 | Dominater069 | 153 |
What is the proof of Editorial Solution of this problem? http://community.topcoder.com/stat?c=problem_statement&pm=13090&rd=15848
Can anyone explain the solution to this question ? http://acm.hdu.edu.cn/showproblem.php?pid=4253
Could someone guide me for preparing for ICPC regionals. I find myself lost on how to progress. Just need some guidance :) .
I was trying to solve This Problem on Spoj.
The problem is to find the sum of all divisors of i where i=1 to i=N.
We have to solve this in sqrt(n) complexity.
This is the Ac'ed python Code, I couldn't figure out the logic behind this.
Please provide me with some hints..Thanks
Problem Link
My approach:
I applied Binary search on Mean(i.e answer to be found) and assigned weight of each edge equal to [Val-Mid] (Val is the value of each egde in the initial graph and Mid is the present Value of Mean during the binary search).
For each Mid in binary search I applied Bellman ford to check if any negative value cycle exists. I am constantly getting WA.(i even tried floyd for negative cycle detection).
Any help is appreciated.
How to solve this problem on Convex hull? http://poj.org/problem?id=1294
Name |
---|