Codeforces problemset search & solutions
Exclude tags.

Review the problem statement from Codeforces (link will open a new tab). When you've matched your problem, go to the solutions.

Get exact match for tags using this format, eg: [u'brute force', 'dp']

Solved
Name
Tags
Solutions
Index
Contest
Type
Points
Tutorial
Rating Level
84623 Registration System data structures hashing implementation Statement C Codeforces Beta Round 4 (Div. 2 Only) {4} PROGRAMMING 1500