Codeforces Visualizer

This is code repository for a simple analytics visualization site for Codeforces online judge users using Codeforces API. The site is currently hosted at here.

Current features

Single User Analytics

• Verdicts chart
• Languages chart
• Tags chart
• Levels chart
• Total tried problems count
• Total solved problems count
• Average and max attempts
• Count of problems solved with one submission
• Max AC for a single problem (It indicates in how many ways someone solved a problem)
• List of unsolved problems

Comparison between two users

• Current, max and min rating
• Number of contests
• Best and worst position in contest
• Max positive and negative rating change
• Compared rating time-line
• Total tried problem count compared
• Total solved problem count compared
• Average and max attempts compared
• Count of problems solved with one submission compared
• Max AC for a single problem compared
• Tags compared
• Levels compared

Issues

• When somebody searches for a handle that doesn't exists, we get Cross-Origin Request blocked and the status code becomes 0 in jQuery. So we can't determine if the user doesn't really exists or some other network problem occurs.
• Firefox hangs for a while when drawing the tags comparison chart. Probably because it's big. I have plan to divide that chart in two parts.
• When counting number of solved problems, some problems that appear both on div 1 and div 2 get counted twice.