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1809DBinary String Sorting1800constructive algorithms, greedy1809ETwo Tanks2400binary search, dp, implementation1811BConveyor Belts1000implementation, math1811CRestore the Array1100constructive algorithms, greedy1811DUmka and a Long Flight1600constructive algorithms, implementation, math1811ELiving Sequence1500binary search, dp, math1811FIs It Flower?2100dfs and similar, graphs, implementation1811G1Vlad and the Nice Paths (easy version)2100combinatorics, dp, math1811G2Vlad and the Nice Paths (hard version)2200binary search, combinatorics, data structures1815AIan and Array Sorting1300greedy, math1815BSum Graph2000brute force, constructive algorithms, graphs1815CBetween2200constructive algorithms, dfs and similar, graphs1819AConstructive Problem1300brute force, greedy1819BThe Butcher1900geometry, greedy, implementation1819CThe Fox and the Complete Tree Traversal2400constructive algorithms, dp, implementation1820BJoJo's Incredible Adventures1100math, strings, two pointers1824ALuoTianyi and the Show1400greedy, implementation1824B1LuoTianyi and the Floating Islands (Easy Version)1800combinatorics, math, probabilities1824B2LuoTianyi and the Floating Islands (Hard Version)2300combinatorics, dfs and similar, math1829DGold Rush1000brute force, dfs and similar, dp1829EThe Lakes1100dfs and similar, dsu, graphs1829FForever Winter1300dfs and similar, graphs, math1829GHits Different1600data structures, dp, implementation1829HDon't Blame Me1700bitmasks, combinatorics, dp1830ACopil Copac Draws Trees1400dfs and similar, dp, graphs1830BThe BOSS Can Count Pairs2000brute force, math1830CHyperregular Bracket Strings2400combinatorics, greedy, hashing1831BArray merging1000constructive algorithms, greedy1834BMaximum Strength1000greedy, math1834CGame with Reversing1200games, greedy, math1834DSurvey in Class1900brute force, data structures, greedy1834EMEX of LCM2300binary search, data structures, implementation1835Ak-th equality1700brute force, implementation, math1838BMinimize Permutation Subarrays1100constructive algorithms, math1838CNo Prime Differences1400constructive algorithms, math, number theory1838DBracket Walk2100data structures, greedy, strings183AHeadquarters1700constructive algorithms, math1842BTenzing and Books1100bitmasks, greedy, math1842CTenzing and Balls1500dp1842DTenzing and His Animal Friends1900constructive algorithms, graphs, greedy1842ETenzing and Triangle2300data structures, dp, geometry1846CRudolf and the Another Competition1200constructive algorithms, data structures, dp1846DRudolph and Christmas Tree1200constructive algorithms, geometry, math1846E1Rudolf and Snowflakes (simple version)1300brute force, implementation, math1846E2Rudolf and Snowflakes (hard version)1800binary search, brute force, implementation1846GRudolf and CodeVid-231900bitmasks, dp, graphs1852ANtarsis' Set1800binary search, math, number theory1852BImbalanced Arrays1800constructive algorithms, graphs, greedy1852CIna of the Mountain2400data structures, dp, greedy1853BFibonaccharsis1200binary search, brute force, math
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