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Graphs and treesLevel 3Open topic
Eulerian path existenceMediumWrite codeWrite codeMedium25 minMaximum spanning tree weightMediumWrite codeWrite codeMedium25 minShortest path count moduloMediumWrite codeWrite codeMedium30 minLexicographically smallest topological sortMediumWrite codeWrite codeMedium25 minBipartite graph coloringMediumWrite codeWrite codeMedium25 minTask scheduling semestersMediumWrite codeAmazon styleWrite codeAmazon styleMedium25 minConnected components after mergesMediumWrite codeWrite codeMedium20 minConnect points minimum costMediumWrite codeAmazon styleWrite codeAmazon styleMedium30 minLargest blob sizeMediumWrite codeAmazon styleWrite codeAmazon styleMedium20 minWildcard dictionary searchMediumWrite codeMeta styleWrite codeMeta styleMedium25 minRange minimum queriesMediumWrite codeCitadel styleWrite codeCitadel styleMedium25 minFenwick tree range updatesMediumWrite codeCitadel styleWrite codeCitadel styleMedium25 min
Prefix word countMediumWrite codeAmazon styleWrite codeAmazon styleMedium20 minDeepest leaves lowest ancestorMediumWrite codeWrite codeMedium30 minBalanced BST from sorted arrayMediumWrite codeWrite codeMedium25 minDistance between tree nodesMediumWrite codeWrite codeMedium30 minEulerian path existsMediumWrite codeWrite codeMedium25 minMinimum edge reversalsMediumWrite codeWrite codeMedium25 minPackage install orderMediumWrite codeGoogle styleWrite codeGoogle styleMedium25 minWord transformation sequenceMediumWrite codeAmazon styleWrite codeAmazon styleMedium30 minNetwork connection timestampMediumWrite codeMeta styleWrite codeMeta styleMedium25 minMinimize maximum link latencyMediumWrite codeWrite codeMedium25 minSplit people into teamsMediumWrite codeMeta styleWrite codeMeta styleMedium25 minCritical path makespanMediumWrite codeGoogle styleWrite codeGoogle styleMedium30 minAccount merge deduplicationMediumWrite codeMeta styleWrite codeMeta styleMedium30 minUnique topological orderingMediumWrite codeGoogle styleWrite codeGoogle styleMedium30 minMinimum content seed serversMediumWrite codeWrite codeMedium20 minMaximum path reliabilityMediumWrite codeWrite codeMedium30 minWord dictionary with wildcardsMediumWrite codeAmazon styleWrite codeAmazon styleMedium30 minReconstruct BST from preorderMediumWrite codeWrite codeMedium30 minCount nodes in complete treeMediumWrite codeGoogle styleWrite codeGoogle styleMedium25 minRecover swapped BSTMediumWrite codeMeta styleWrite codeMeta styleMedium30 minSegment tree range maxMediumWrite codeCitadel styleWrite codeCitadel styleMedium30 minKth ancestor in treeMediumWrite codeWrite codeMedium30 minLargest balanced subtreeMediumWrite codeWrite codeMedium30 minDistinct substringsMediumWrite codeWrite codeMedium28 minShortest path negative weightsMediumWrite codeWrite codeMedium25 minShortest path 0-1 weightsMediumWrite codeWrite codeMedium25 minShortest path minimum hopsMediumWrite codeWrite codeMedium30 minMinimum spanning tree with required edgeMediumWrite codeWrite codeMedium30 minSmallest cycle nodeMediumWrite codeWrite codeMedium25 minMinimum road reversals to capitalMediumWrite codeWrite codeMedium25 minSum root to leaf numbersMediumWrite codeWrite codeMedium15 minGreater sum treeMediumWrite codeWrite codeMedium20 minTree diameter edgesMediumWrite codeWrite codeMedium18 minValidate binary search treeMediumWrite codeWrite codeMedium16 minShortest path DijkstraMediumWrite codeWrite codeMedium30 minFlatten multilevel listMediumWrite codeWrite codeMedium25 minEquation division evaluatorMediumWrite codeWrite codeMedium30 minMaximum edge-disjoint pathsMediumWrite codeWrite codeMedium30 min