- CF263E Rhombus (solved) solution
- CF293B Distinct Paths (solved)
- CF235E Number Challenge (solved)
- CF325E The Red Button (solved)
- CF241B Friends (solved) solution
- CF260E Dividing Kingdom
- CF317E Princess and Her Shadow
- CF325D Reclamation
- CF335E Counting Skyscrapers
- CF339E Three Swaps (solved)
- CF286E Ladies' Shop (solved)
- CF332D Theft of Blueprints
- CF335D Rectangles and Square
- CF261D Maxim and Increasing Subsequence (solved)
- CF235C Cyclical Quest (solved)
- CF306D Polygon
- CF249E Endless Matrix (solved) solution
- CF295D Greg and Caves
- CF264E Roadside Trees
- CF286D Tourists
- CF258D Little Elephant and Broken Sorting (solved)
- CF273D Dima and Figure
- CF283E Cow Tennis Tournament
- CF280E Sequence Transformation
- CF305D Olya and Graph
- CF290F Greedy Petya
- CF261E Maxim and Calculator
- CF253E Printer
- CF309E Sheep
- CF316E3 Summer Homework (solved)
- CF243C Colorado Potato Beetle
- CF316G3 Good Substrings
- CF251E Tree and Table
- CF256D Liars and Serge
- CF303D Rotatable Number
- CF338D GCD Table
- CF266E More Queries to Array... (solved)
- CF269E String Theory
- CF332E Binary Key
- CF331E2 Deja Vu
- CF290E HQ
- CF273E Dima and Game
- CF333C Lucky Tickets
- CF240F TorCoder (solved)
- CF305E Playing with String
- CF235D Graph Game
- CF342D Xenia and Dominoes
- CF319E Ping-Pong
- CF301C Yaroslav and Algorithm
- CF241D Numbers
- CF309D Tennis Rackets
- CF301E Yaroslav and Arrangements
- CF309B Context Advertising
- CF331D3 Escaping on Beaveractor
- CF277D Google Code Jam
- CF341E Candies Game
- CF323B Tournament-graph
- CF248E Piglet's Birthday
- CF325C Monsters and Diamonds
- CF266D BerDonalds
- CF311C Fetch the Treasure
- CF316D3 PE Lesson (solved)
- CF343E Pumping Stations
- CF267C Berland Traffic
- CF240E Road Repairs
- CF329E Evil
- CF303E Random Ranking
- CF316F3 Suns and Rays
- CF345D Chain Letter
- CF338E Optimize! (solved)
- CF285E Positions in Permutations (solved)
- CF238D Tape Programming
- CF331C3 The Great Julya Calendar
- CF288E Polo the Penguin and Lucky Numbers
- CF241F Race
- CF238E Meeting Her
- CF251D Two Sets (solved)
- CF336E Vasily the Bear and Painting Square
- CF293E Close Vertices
- CF345C Counting Fridays
- CF241E Flights
- CF257E Greedy Elevator
- CF268D Wall Bars
- CF254D Rats
- CF269D Maximum Waterfall
- CF345B Triskaidekaphobia
- CF264D Colorful Stones
- CF280D k-Maximum Subsequence Sum
- CF243E Matrix
- CF329D The Evil Temple and the Moving Rocks
- CF293D Ksusha and Square
- CF306C White, Black and White Again
- CF335F Buy One, Get One Free (solved)
- CF317C Balance
- CF297E Mystic Carvings
- CF294D Shaass and Painter Robot (solved)
- CF321D Ciel and Flipboard
- CF274C The Last Hole!
- CF319D Have You Ever Heard About the Word?
- CF314E Sereja and Squares