- Educational Codeforces Round 1 (http://mirror.codeforces.com/contest/598)
- Educational Codeforces Round 2 (http://mirror.codeforces.com/contest/600)
- Educational Codeforces Round 3 (http://mirror.codeforces.com/contest/609)
- Educational Codeforces Round 4 (http://mirror.codeforces.com/contest/612)
- Educational Codeforces Round 5 (http://mirror.codeforces.com/contest/616)
- Educational Codeforces Round 6 (http://mirror.codeforces.com/contest/620)
- Educational Codeforces Round 7 (http://mirror.codeforces.com/contest/622)
- Educational Codeforces Round 8 (http://mirror.codeforces.com/contest/628)
- Educational Codeforces Round 9 (http://mirror.codeforces.com/contest/632)