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Link to the codeforces api website in the readme not working.
Current Readme Link: http://codeforces.com/api/help
Current working API Link: https://codeforces.com/apiHelp
I want to fix it.

what about adding two fields under the handle. one for the API key, and the other is for the API secret. check codeforces API authorization on how to get private data using the API info. so the user can keep track of his private submissions. 😃

I recently did a profile test and found out that now it is considering the base rating (that is, the rating before any contest) as 1200 instead of 1500 (which is the base rating for a user that Codeforces considers).

Due to this, the Max up is showing up as 288 (actually I had a -12 for my first contest, as my first rating was 1488), and that surely isn't my Max up as of now. I clearly remember that earlier it used to work correctly.

Currently every user search on https://cfviz.netlify.com/ throws the error: "Couldn't find user".

Would be great, if you can fix this.

The text "Be the first...." is also cropped off.

After clicking:

You can get rid of the button, replace it with some other sharing feature because facebook recommend is pretty outdated honestly, or fix the current functioning. I would like to work on this and fix it whatever you decide is the way to correct this!

Hey sakib i think there is some problem on compare page.
i am facing this error (can not read property do of undefined.

https://cfviz.netlify.app/compare.html

The current algorithm for computing the places array is wrong. For example there are 3 users with rank [1,2,3] and the virtual user is strictly worse than the user with rank 1 and strictly better than the user with rank 2, then the resulting places array is [1,2,2,3] instead of [1,2,3,4] (which becomes [1,3,3,4] instead of [1,2,3,4] after recomputing rank)

What's the best way to solve the problem?

1. Explicitly state that the places array doesn't need to be correct and only equality of adjacent elements matters. (for example [1, 1.5, 2, 3] is equivalent to [1, 2, 3, 4])

Diff:

diff --git a/js/calculate.js b/js/calculate.js
index 1a4f4a6..6dfbdec 100644
--- a/js/calculate.js
+++ b/js/calculate.js
@@ -89,6 +89,19 @@ function process(contestants) {
 }
 
 
+/**
+ * Calculate rating changes.
+ *
+ * Arguments:
+ *
+ * previousRatings: An array of previous rating of contestants.
+ * standingsRows: An array of contestant ranks. This array must be
+ * non-decreasing, and the ranking of two adjacent contestants must be the
+ * same if and only if they have the same points/penalty; however the exact
+ * value does not matter - for example [1, 2, 3, 3] and [3, 6, 7.5, 7.5] are
+ * considered equivalent.
+ * userId: An array of contestants handles (strings).
+ */
 function CalculateRatingChanges(previousRatings, standingsRows, userId) {
   var arr = [];
   for (var i = 0; i < standingsRows.length; i++) {
diff --git a/js/vir.js b/js/vir.js
index 615b0ba..833ede9 100644
--- a/js/vir.js
+++ b/js/vir.js
@@ -94,7 +94,7 @@ function refresh() {
     if ((points > rows[i].points || (points == rows[i].points && penalty <= rows[i].penalty))
         && rank == -1) {
       handles.push('virtual user');
-      places.push(rows[i].rank);
+      places.push(points == rows[i].points && penalty == rows[i].penalty ? rows[i].rank : rows[i].rank - 0.5);
       rank = rows[i].rank;
     }
     if (userHandle == rows[i].party.members[0].handle) {

2. Compute the ranking correctly. In this case it's easier to move the recalculate rank function to that part as the logic would mostly overlap.

Also: If the virtual user is worse than all of the participants, then the result will be the result of the last computation.

In my CF profile I see that I have solved 206 problems, but in CFviz there are only 186. I have also tried solving more problems than I have in CFviz. I'm not sure it is a problem on CFviz side, but I better report than not.

I've checked for a few different users, for all of them the maxup showed their rating after the first contest.

Now that problems have rating tags, is it possible for you to add a bar chart showing how many problems of each rating level have been solved?

How to use rating change feature ?
I mean how to get Penalty and Points that is required to fill ?

It nowhere includes the no of problems solved inside the codeforces' gym which is kinda bad for analyzing one's performance.

We all programmers love dark mode. So why not have a dark mode for an open-source project. I have to rely on third-party apps to convert CF into dark mode. But we can have that feature in-built in this project.

First contest can be considered as starting elo, it doesn't reflect best performance in any way. So i feel it's pointless to include in the max up, especially when we should actually be talking about deltas. For example, if someone started at 1400, (with old rating starts), this will be considered their best performance.

Throwing Error "Couldn't find user" again for all users
https://cfviz.netlify.app/

For common contests, sort contests in decreasing order of rating update time.

It will be nice if the website is made responsive to different screen sizes, I would like to contribute to this if permitted.

Sometimes (rarely) there are optimization contests on Codeforces, the results for these tasks are always partial scores. These submissions affect many of the categories because they are not considered as Accepted solutions. So, there is a need to filter such submission so that one can get a better view of the CP Problems they have solved on Codeforces, and not mix the rare optimization problems.

hey! Sakib
i want to work on multiple counting issue of problems (total solved).
I can reduce redundant counting to almost negligible level.
This will come with little bit time cost but will work quite well.
Should i work on that or someone else is already working on that ??.

When virtual rating change was fed with -1e22 as the rating, an integer overflow occurred.

Rating given by the user should be restricted or "clamped" to a reasonable range.

During the past week, I noted that after solving following problems

601A Div1

687A Div1

282C Div2

687B Div1

442B Div1

340D Div2

671A Div1,

number of A increased by 3, and there was no increase in number of C solved.