- Karen and Coffee - Codeforces
- Or Game - Codeforces
- To The Max - ZOJ
- Game - Codeforces
- Black and White Stones - URI
- Swap Space - uVA
- Game of Matching - URI
- Bora Bora - URI
- Password - Codeforces
- Pasti Pas! - LiveArchive
- Igor In the Museum - Codeforces
- Dijkstra? - Codeforces
- Greg and Graph - Codeforces
- Bank Robbery - UVa
- Wormholes - UVa
- Almost Shortest Path - LiveArchive
- Zing Zhu’s Oyster Farm - LiveArchive
- 106 Miles To Chicago - URI
- Generating Alien DNA - URI
- Aibohphobia - SPOJ
- Ada and Game - SPOJ
- Wedding shopping - UVa
- Dividing coins - UVa
- Exposing corruption - UVa
- Chocolate 2 - Timus
- Chocolate - SPOJ
- Binary Search Tree - LiveArchive
- Prime Digital Roots - LiveArchive
- Little Red Riding Hood - UVa
- Dreamoon and WiFi - Codeforces
- Cthulhu - Codeforces
- Dark Roads - UVa
- Rare Order - UVa
- Beverages - UVa
- Many Paths, One Destination - UVa
- Critical Links - UVa
- The Ant - SPOJ
- Test - UVa
- Checkposts - Codeforces
- The Child and Zoo - Codeforces