| CF580D | CF580D Kefa and Dishes |
| CF581F | CF581F Zublicanes and Mumocrates |
| CF582D | CF582D Number of Binominal Coefficients |
| CF582E | CF582E Boolean Function |
| CF584D | CF584D Dima and Lisa |
| CF585E | CF585E Present for Vitalik the Philatelist |
| CF585F | CF585F Digits of Number Pi |
| CF587B | CF587B Duff in Beach |
| CF587C | CF587C Duff in the Army |
| CF587D | CF587D Duff in Mafia |
| CF587F | CF587F Duff is Mad |
| CF58C | CF58C Trees |
| CF590A | CF590A Median Smoothing |
| CF590B | CF590B Chip 'n Dale Rescue Rangers |
| CF590C | CF590C Three States |
| CF590D | CF590D Top Secret Task |
| CF590E | CF590E Birthday |
| CF592D | CF592D Super M |
| CF593E | CF593E Strange Calculation and Cats |
| CF594A | CF594A Warrior and Archer |
| CF597C | CF597C Subsequences |
| CF598C | CF598C Nearest vectors |
| CF598F | CF598F Cut Length |
| CF600C | CF600C Make Palindrome |
| CF600D | CF600D Area of Two Circles' Intersection |
| CF600E | CF600E Lomsat gelral |
| CF601B | CF601B Lipshitz Sequence |
| CF603C | CF603C Lieges of Legendre |
| CF603E | CF603E Pastoral Oddities |
| CF605E | CF605E Intergalaxy Trips |
| CF607B | CF607B Zuma |
| CF607E | CF607E Cross Sum |
| CF609D | CF609D Gadgets for dollars and pounds |
| CF609E | CF609E Minimum spanning tree for each edge |
| CF609F | CF609F Frogs and mosquitoes |
| CF611D | CF611D New Year and Ancient Prophecy |
| CF611F | CF611F New Year and Cleaning |
| CF611G | CF611G New Year and Cake |
| CF611H | CF611H New Year and Forgotten Tree |
| CF612D | CF612D The Union of k-Segments |
| CF612E | CF612E Square Root of Permutation |
| CF612F | CF612F Simba on the Circle |
| CF613B | CF613B Skills |
| CF613D | CF613D Kingdom and its Cities |
| CF613E | CF613E Puzzle Lover |
| CF615D | CF615D Multipliers |
| CF616E | CF616E Sum of Remainders |
| CF616F | CF616F Expensive Strings |
| CF617E | CF617E XOR and Favorite Number |
| CF618F | CF618F Double Knapsack |
| CF61E | CF61E Enemy is weak |
| CF620E | CF620E New Year Tree |
| CF620F | CF620F Xors on Segments |
| CF621E | CF621E Wet Shark and Blocks |
| CF622E | CF622E Ants in Leaves |
| CF622F | CF622F The Sum of the k-th Powers |
| CF623E | CF623E Transforming Sequence |
| CF625E | CF625E Frog Fights |
| CF626F | CF626F Group Projects |
| CF627A | CF627A XOR Equation |
| CF627E | CF627E Orchestra |
| CF627F | CF627F Island Puzzle |
| CF628D | CF628D Magic Numbers |
| CF628E | CF628E Zbazi in Zeydabad |
| CF628F | CF628F Bear and Fair Set |
| CF629E | CF629E Famil Door and Roads |
| CF632C | CF632C The Smallest String Concatenation |
| CF632D | CF632D Longest Subsequence |
| CF632E | CF632E Thief in a Shop |
| CF632F | CF632F Magic Matrix |
| CF633D | CF633D Fibonacci-ish |
| CF638C | CF638C Road Improvement |
| CF639E | CF639E Bear and Paradox |
| CF639F | CF639F Bear and Chemistry |
| CF643C | CF643C Levels and Regions |
| CF643D | CF643D Bearish Fanpages |
| CF643F | CF643F Bears and Juice |
| CF643G | CF643G Choosing Ads |
| CF645F | CF645F Cowslip Collections |
| CF650D | CF650D Zip-line |
| CF652D | CF652D Nested Segments |
| CF652E | CF652E Pursuit For Artifacts |
| CF653E | CF653E Bear and Forgotten Tree 2 |
| CF653F | CF653F Paper task |
| CF660D | CF660D Number of Parallelograms |
| CF662C | CF662C Binary Table |
| CF665D | CF665D Simple Subset |
| CF665E | CF665E Beautiful Subarrays |
| CF666C | CF666C Codeword |
| CF666D | CF666D Chain Reaction |
| CF666E | CF666E Forensic Examination |
| CF671D | CF671D Roads in Yusland |
| CF671E | CF671E Organizing a Race |
| CF678D | CF678D Iterated Linear Function |
| CF678E | CF678E Another Sith Tournament |
| CF679E | CF679E Bear and Bad Powers of 42 |
| CF67C | CF67C Sequence of Balls |
| CF685B | CF685B Kay and Snowflake |
| CF685C | CF685C Optimal Point |
| CF689D | CF689D Friends and Subsequences |