Holiday Season
Turtle’s Path
Count the permutation
Hacker Decrypting Messages
Hacker with Team
Codeforces Round 127 (Div. 1) C. Fragile Bridges
Codeforces Round 129 (Div. 1) C. Little Elephant and Furik and Rubik
Abbyy Cup 2.0 - Final (unofficial) A3. Beaver’s Calculator 1.0
Abbyy Cup 2.0 - Final (unofficial) D3. The Beaver’s Problem - 3
Abbyy Cup 2.0 - Final (unofficial) D2. The Beaver’s Problem - 3