add CTFtime to problem-sets-competitive-programming.md (#3468)

* -_- * -_- * -_-
5 years ago · a2ddafdfe6
parent 5c090d7db2
commit a2ddafdfe6
1 changed files with 6 additions and 0 deletions
--- a/problem-sets-competitive-programming.md
+++ b/problem-sets-competitive-programming.md
@ -2,6 +2,7 @@
 * [Competitive Programming](#competitive-programming)
 * [Data science](#data-science)
 * [Information security](#information-security)
 * [Problem Sets](#problem-sets)
@ -36,6 +37,11 @@
 * [Kaggle](https://www.kaggle.com)
 ### Information security
 * [CTFtime](https://ctftime.org)
 ### Problem Sets
 * [500 Data structures and algorithms interview questions and their solutions in C++](https://techiedelight.quora.com/500-Data-structures-and-algorithms-interview-questions-and-their-solutions-in-C%2B%2B)