| CF691D | CF691D Swaps in Permutation |
| CF691E | CF691E Xor-sequences |
| CF691F | CF691F Couple Cover |
| CF696D | CF696D Legen... |
| CF696E | CF696E ...Wait for it... |
| CF696F | CF696F ...Dary! |
| CF698C | CF698C LRU |
| CF698D | CF698D Limak and Shooting Points |
| CF700E | CF700E Cool Slogans |
| CF702E | CF702E Analysis of Pathes in Functional Graph |
| CF702F | CF702F T-Shirts |
| CF703D | CF703D Mishka and Interesting sum |
| CF704B | CF704B Ant Man |
| CF704C | CF704C Black Widow |
| CF704D | CF704D Captain America |
| CF704E | CF704E Iron Man |
| CF708C | CF708C Centroids |
| CF708D | CF708D Incorrect Flow |
| CF708E | CF708E Student's Camp |
| CF70D | CF70D Professor's task |
| CF710D | CF710D Two Arithmetic Progressions |
| CF710E | CF710E Generate a String |
| CF711D | CF711D Directed Roads |
| CF713C | CF713C Sonya and Problem Without a Legend |
| CF713D | CF713D Animals and Puzzle |
| CF715B | CF715B Complete The Graph |
| CF715C | CF715C Digit Tree |
| CF715E | CF715E Complete the Permutations |
| CF717A | CF717A Festival Organization |
| CF718C | CF718C Sasha and Array |
| CF720A | CF720A Closing ceremony |
| CF721C | CF721C Journey |
| CF722F | CF722F Cyclic Cipher |
| CF723F | CF723F st-Spanning Tree |
| CF724C | CF724C Ray Tracing |
| CF724E | CF724E Goods transportation |
| CF724F | CF724F Uniformly Branched Trees |
| CF724G | CF724G Xor-matic Number of the Graph |
| CF725E | CF725E Too Much Money |
| CF730J | CF730J Bottles |
| CF731C | CF731C Socks |
| CF731E | CF731E Funny Game |
| CF732F | CF732F Tourist Reform |
| CF734E | CF734E Anton and Tree |
| CF734F | CF734F Anton and School |
| CF736E | CF736E Chess Championship |
| CF739E | CF739E Gosha is hunting |
| CF741C | CF741C Arpa’s overnight party and Mehrdad’s silent entering |
| CF741D | CF741D Arpa’s letter-marked tree and Mehrdad’s Dokhtar-kosh paths |
| CF743E | CF743E Vladik and cards |
| CF744C | CF744C Hongcow Buys a Deck of Cards |
| CF746G | CF746G New Roads |
| CF748D | CF748D Santa Claus and a Palindrome |
| CF749C | CF749C Voting |
| CF750E | CF750E New Year and Old Subsequence |
| CF750H | CF750H New Year and Snowy Grid |
| CF754E | CF754E Dasha and cyclic table |
| CF755D | CF755D PolandBall and Polygon |
| CF756D | CF756D Bacterial Melee |
| CF757F | CF757F Team Rocket Rises Again |
| CF762F | CF762F Tree nesting |
| CF763A | CF763A Timofey and a tree |
| CF765F | CF765F Souvenirs |
| CF766D | CF766D Mahmoud and a Dictionary |
| CF767C | CF767C Garland |
| CF768G | CF768G The Winds of Winter |
| CF76A | CF76A Gift |
| CF76B | CF76B Mice |
| CF76C | CF76C Mutation |
| CF772D | CF772D Varying Kibibits |
| CF773D | CF773D Perishable Roads |
| CF773F | CF773F Test Data Generation |
| CF777C | CF777C Alyona and Spreadsheet |
| CF778B | CF778B Bitwise Formula |
| CF778C | CF778C Peterson Polyglot |
| CF778D | CF778D Parquet Re-laying |
| CF778E | CF778E Selling Numbers |
| CF77C | CF77C Beavermuncher-0xFF |
| CF780E | CF780E Underground Lab |
| CF780F | CF780F Axel and Marston in Bitland |
| CF780G | CF780G Andryusha and Nervous Barriers |
| CF786B | CF786B Legacy |
| CF786C | CF786C Till I Collapse |
| CF786E | CF786E ALT |
| CF788B | CF788B Weird journey |
| CF788D | CF788D Finding lines |
| CF78E | CF78E Evacuation |
| CF792E | CF792E Colored Balls |
| CF793G | CF793G Oleg and chess |
| CF794E | CF794E Choosing Carrot |
| CF794G | CF794G Replace All |
| CF796D | CF796D Police Stations |
| CF797E | CF797E Array Queries |
| CF797F | CF797F Mice and Holes |
| CF798E | CF798E Mike and code of a permutation |
| CF79D | CF79D Password |
| CF7C | CF7C Line |
| CF802C | CF802C Heidi and Library (hard) |
| CF802O | CF802O April Fools' Problem (hard) |
| CF803C | CF803C Maximal GCD |