| CF474D | CF474D Flowers |
| CF475D | CF475D CGCDSSQ |
| CF476D | CF476D Dreamoon and Sets |
| CF482C | CF482C Game with Strings |
| CF484A | CF484A Bits |
| CF484B | CF484B Maximum Value |
| CF484C | CF484C Strange Sorting |
| CF484D | CF484D Kindergarten |
| CF486D | CF486D Valid Sets |
| CF487C | CF487C Prefix Product Sequence |
| CF487D | CF487D Conveyor Belts |
| CF487E | CF487E Tourists |
| CF48G | CF48G Galaxy Union |
| CF48H | CF48H Black and White |
| CF494C | CF494C Helping People |
| CF498B | CF498B Name That Tune |
| CF498C | CF498C Array and Operations |
| CF49E | CF49E Common ancestor |
| CF500E | CF500E New Year Domino |
| CF501D | CF501D Misha and Permutations Summation |
| CF501E | CF501E Misha and Palindrome Degree |
| CF504E | CF504E Misha and LCP on Tree |
| CF505D | CF505D Mr. Kitayuta's Technology |
| CF505E | CF505E Mr. Kitayuta vs. Bamboos |
| CF506E | CF506E Mr. Kitayuta's Gift |
| CF507C | CF507C Guess Your Way Out! |
| CF507D | CF507D The Maths Lecture |
| CF507E | CF507E Breaking Good |
| CF508D | CF508D Tanya and Password |
| CF510C | CF510C Fox And Names |
| CF510D | CF510D Fox And Jumping |
| CF510E | CF510E Fox And Dinner |
| CF512D | CF512D Fox And Travelling |
| CF513F1 | CF513F1 Scaygerboss |
| CF513F2 | CF513F2 Scaygerboss |
| CF514C | CF514C Watto and Mechanism |
| CF514E | CF514E Darth Vader and Tree |
| CF516D | CF516D Drazil and Morning Exercise |
| CF516E | CF516E Drazil and His Happy Friends |
| CF519E | CF519E A and B and Lecture Rooms |
| CF51F | CF51F Caterpillar |
| CF520D | CF520D Cubes |
| CF520E | CF520E Pluses everywhere |
| CF521D | CF521D Shop |
| CF521E | CF521E Cycling City |
| CF522D | CF522D Closest Equals |
| CF525D | CF525D Arthur and Walls |
| CF525E | CF525E Anya and Cubes |
| CF526D | CF526D Om Nom and Necklace |
| CF526F | CF526F Pudding Monsters |
| CF526G | CF526G Spiders Evil Plan |
| CF527C | CF527C Glass Carving |
| CF527D | CF527D Clique Problem |
| CF527E | CF527E Data Center Drama |
| CF528D | CF528D Fuzzy Search |
| CF533A | CF533A Berland Miners |
| CF533B | CF533B Work Group |
| CF533E | CF533E Correcting Mistakes |
| CF536D | CF536D Tavas in Kansas |
| CF536E | CF536E Tavas on the Path |
| CF538F | CF538F A Heap of Heaps |
| CF538G | CF538G Berserk Robot |
| CF538H | CF538H Summer Dichotomy |
| CF540D | CF540D Bad Luck Island |
| CF543A | CF543A Writing Code |
| CF543C | CF543C Remembering Strings |
| CF546D | CF546D Soldier and Number Game |
| CF546E | CF546E Soldier and Traveling |
| CF547B | CF547B Mike and Feet |
| CF547D | CF547D Mike and Fish |
| CF547E | CF547E Mike and Friends |
| CF54D | CF54D Writing a Song |
| CF551E | CF551E GukiZ and GukiZiana |
| CF553E | CF553E Kyoya and Train |
| CF555E | CF555E Case of Computer Network |
| CF558E | CF558E A Simple Task |
| CF559C | CF559C Gerald and Giant Chess |
| CF559E | CF559E Gerald and Path |
| CF55C | CF55C Pie or die |
| CF55D | CF55D Beautiful numbers |
| CF566C | CF566C Logistical Questions |
| CF566E | CF566E Restoring Map |
| CF566F | CF566F Clique in the Divisibility Graph |
| CF567E | CF567E President and Roads |
| CF568C | CF568C New Language |
| CF568E | CF568E Longest Increasing Subsequence |
| CF570D | CF570D Tree Requests |
| CF571A | CF571A Lengthening Sticks |
| CF571B | CF571B Minimization |
| CF571D | CF571D Campus |
| CF571E | CF571E Geometric Progressions |
| CF573E | CF573E Bear and Bowling |
| CF575A | CF575A Fibonotci |
| CF575E | CF575E Spectator Riots |
| CF575I | CF575I Robots protection |
| CF576D | CF576D Flights for Regular Customers |
| CF576E | CF576E Painting Edges |
| CF578D | CF578D LCS Again |
| CF578E | CF578E Walking! |
| CF578F | CF578F Mirror Box |