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1701DPermutation Restoration1900binary search, data structures, greedy1705DMark and Lightbulbs1800combinatorics, constructive algorithms, greedy1705EMark and Professor Koro2300binary search, bitmasks, brute force1708BDifference of GCDs1100constructive algorithms, math1709CRecover an RBS1800constructive algorithms, greedy, implementation1709DRorororobot1700binary search, data structures, greedy1709EXOR Tree2400bitmasks, data structures, dfs and similar1710AColor the Picture1500constructive algorithms, greedy, math1710BRain2100binary search, brute force, data structures1710ETwo Arrays2400binary search, games, graph matchings1711BParty1300brute force, graphs1714DColor with Occurrences1600brute force, data structures, dp1714EAdd Modulo 101400brute force, math, number theory1714FBuild a Tree and That Is It1900constructive algorithms, implementation, trees1714GPath Prefixes1700binary search, data structures, dfs and similar1715BBeautiful Array1000constructive algorithms, greedy, math1715CMonoblock1700combinatorics, data structures, implementation1715D2+ doors19002-sat, bitmasks, graphs1715ELong Way Home2400data structures, divide and conquer, dp1719CFighting Tournament1400binary search, data structures, implementation1720CCorners1200greedy, implementation1720D1Xor-Subsequence (easy version)1800bitmasks, brute force, dp1720D2Xor-Subsequence (hard version)2400bitmasks, data structures, dp1721CMin-Max Array Transformation1400binary search, greedy, two pointers1721DMaximum AND1800bitmasks, dfs and similar, divide and conquer1721EPrefix Function Queries2200dfs and similar, dp, hashing1725BBasketball Together1000binary search, greedy, sortings1725CCircular Mirror2000binary search, combinatorics, geometry1725GGarage1500binary search, geometry, math1725HHot Black Hot White1800constructive algorithms, math1725MMoving Both Hands1800dp, graphs, shortest paths1728CDigital Logarithm1400data structures, greedy, sortings1728DLetter Picking1800constructive algorithms, dp, games1728ERed-Black Pepper2300brute force, data structures, greedy1730BMeeting on the Line1600binary search, geometry, greedy1730CMinimum Notation1200data structures, greedy, math1730DPrefixes and Suffixes2200constructive algorithms, strings, two pointers1734CRemoving Smallest Multiples1200greedy, math1734DSlime Escape1800data structures, dp, greedy1738BPrefix Sum Addicts1200constructive algorithms, greedy, math1738CEven Number Addicts1500dp, games, greedy1738DPermutation Addicts1900constructive algorithms, data structures, dfs and similar1738EBalance Addicts2300combinatorics, dp, math1738FConnectivity Addicts2400constructive algorithms, dsu, graphs1742DCoprime1100brute force, greedy, number theory1742EScuza1200binary search, greedy, math1742FSmaller1500constructive algorithms, greedy, strings1742GOrray1500bitmasks, brute force, greedy1743CSave the Magazines1100constructive algorithms, dp, greedy1743DProblem with Random Tests1700brute force, dp, greedy
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