1. [Codeforces Round #640 (Div. 4)](https://codeforces.com/contest/1352)↵
2. [Codeforces Round #784 (Div. 4)](https://codeforces.com/contest/1669)↵
3. [Codeforces Round #790 (Div. 4)](https://codeforces.com/contest/1676) ↵
4. [Codeforces Round #799 (Div. 4)](https://codeforces.com/contest/1692)↵
5. [Codeforces Round #806 (Div. 4)](https://codeforces.com/contest/1703)
2. [Codeforces Round #784 (Div. 4)](https://codeforces.com/contest/1669)↵
3. [Codeforces Round #790 (Div. 4)](https://codeforces.com/contest/1676) ↵
4. [Codeforces Round #799 (Div. 4)](https://codeforces.com/contest/1692)↵
5. [Codeforces Round #806 (Div. 4)](https://codeforces.com/contest/1703)