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3557 questions in one focused tracker. Company collections will use the same saved progress.

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Questions 3557

Done	Question	Resource
Mark Count Pairs of Equal Substrings With Minimum Difference completed	Count Pairs of Equal Substrings With Minimum Difference	Open
Mark Count Pairs Of Nodes completed	Count Pairs Of Nodes	Open
Mark Count Pairs of Points With Distance k completed	Count Pairs of Points With Distance k	Open
Mark Count Pairs Of Similar Strings completed	Count Pairs Of Similar Strings	Open
Mark Count Pairs That Form a Complete Day I completed	Count Pairs That Form a Complete Day I	Open
Mark Count Pairs That Form a Complete Day II completed	Count Pairs That Form a Complete Day II	Open
Mark Count Pairs Whose Sum is Less than Target completed	Count Pairs Whose Sum is Less than Target	Open
Mark Count Pairs With XOR in a Range completed	Count Pairs With XOR in a Range	Open
Mark Count Palindromic Subsequences completed	Count Palindromic Subsequences	Open
Mark Count Partitions with Even Sum Difference completed	Count Partitions with Even Sum Difference	Open
Mark Count Partitions With Max-Min Difference at Most K completed	Count Partitions With Max-Min Difference at Most K	Open
Mark Count Paths That Can Form a Palindrome in a Tree completed	Count Paths That Can Form a Palindrome in a Tree	Open
Mark Count Paths With the Given XOR Value completed	Count Paths With the Given XOR Value	Open
Mark Count Positions on Street With Required Brightness completed	Count Positions on Street With Required Brightness	Open
Mark Count Prefix and Suffix Pairs I completed	Count Prefix and Suffix Pairs I	Open
Mark Count Prefix and Suffix Pairs II completed	Count Prefix and Suffix Pairs II	Open
Mark Count Prefixes of a Given String completed	Count Prefixes of a Given String	Open
Mark Count Prime-Gap Balanced Subarrays completed	Count Prime-Gap Balanced Subarrays	Open
Mark Count Primes completed	Count Primes	Open
Mark Count Residue Prefixes completed	Count Residue Prefixes	Open
Mark Count Routes to Climb a Rectangular Grid completed	Count Routes to Climb a Rectangular Grid	Open
Mark Count Salary Categories completed	Count Salary Categories	Open
Mark Count Sequences to K completed	Count Sequences to K	Open
Mark Count Servers that Communicate completed	Count Servers that Communicate	Open
Mark Count Sorted Vowel Strings completed	Count Sorted Vowel Strings	Open
Mark Count Special Integers completed	Count Special Integers	Open
Mark Count Special Quadruplets completed	Count Special Quadruplets	Open
Mark Count Special Subsequences completed	Count Special Subsequences	Open
Mark Count Special Triplets completed	Count Special Triplets	Open
Mark Count Square Submatrices with All Ones completed	Count Square Submatrices with All Ones	Open
Mark Count Square Sum Triples completed	Count Square Sum Triples	Open
Mark Count Stepping Numbers in Range completed	Count Stepping Numbers in Range	Open
Mark Count Strictly Increasing Subarrays completed	Count Strictly Increasing Subarrays	Open
Mark Count Student Number in Departments completed	Count Student Number in Departments	Open
Mark Count Subarrays of Length Three With a Condition completed	Count Subarrays of Length Three With a Condition	Open
Mark Count Subarrays Where Max Element Appears at Least K Times completed	Count Subarrays Where Max Element Appears at Least K Times	Open
Mark Count Subarrays With Fixed Bounds completed	Count Subarrays With Fixed Bounds	Open
Mark Count Subarrays With K Distinct Integers completed	Count Subarrays With K Distinct Integers	Open
Mark Count Subarrays With Majority Element I completed	Count Subarrays With Majority Element I	Open
Mark Count Subarrays With Majority Element II completed	Count Subarrays With Majority Element II	Open
Mark Count Subarrays With Median K completed	Count Subarrays With Median K	Open
Mark Count Subarrays With More Ones Than Zeros completed	Count Subarrays With More Ones Than Zeros	Open
Mark Count Subarrays With Score Less Than K completed	Count Subarrays With Score Less Than K	Open
Mark Count Sub Islands completed	Count Sub Islands	Open
Mark Count Submatrices With All Ones completed	Count Submatrices With All Ones	Open
Mark Count Submatrices With Equal Frequency of X and Y completed	Count Submatrices With Equal Frequency of X and Y	Open
Mark Count Submatrices with Top-Left Element and Sum Less Than k completed	Count Submatrices with Top-Left Element and Sum Less Than k	Open
Mark Count Substrings Divisible By Last Digit completed	Count Substrings Divisible By Last Digit	Open
Mark Count Substrings That Can Be Rearranged to Contain a String I completed	Count Substrings That Can Be Rearranged to Contain a String I	Open
Mark Count Substrings That Differ by One Character completed	Count Substrings That Differ by One Character	Open
Mark Count Substrings With K-Frequency Characters I completed	Count Substrings With K-Frequency Characters I	Open
Mark Count Substrings with Only One Distinct Letter completed	Count Substrings with Only One Distinct Letter	Open
Mark Count Substrings Without Repeating Character completed	Count Substrings Without Repeating Character	Open
Mark Count Symmetric Integers completed	Count Symmetric Integers	Open
Mark Count Tested Devices After Test Operations completed	Count Tested Devices After Test Operations	Open
Mark Count the Digits That Divide a Number completed	Count the Digits That Divide a Number	Open
Mark Count the Hidden Sequences completed	Count the Hidden Sequences	Open
Mark Count the Number of Arrays with K Matching Adjacent Elements completed	Count the Number of Arrays with K Matching Adjacent Elements	Open
Mark Count the Number of Complete Components completed	Count the Number of Complete Components	Open
Mark Count the Number of Computer Unlocking Permutations completed	Count the Number of Computer Unlocking Permutations	Open
Mark Count the Number of Consistent Strings completed	Count the Number of Consistent Strings	Open
Mark Count the Number of Fair Pairs completed	Count the Number of Fair Pairs	Open
Mark Count the Number of Good Partitions completed	Count the Number of Good Partitions	Open
Mark Count the Number of Good Subarrays completed	Count the Number of Good Subarrays	Open
Mark Count the Number of Good Subsequences completed	Count the Number of Good Subsequences	Open
Mark Count the Number of Houses at a Certain Distance I completed	Count the Number of Houses at a Certain Distance I	Open
Mark Count the Number of Houses at a Certain Distance II completed	Count the Number of Houses at a Certain Distance II	Open
Mark Count the Number of Ideal Arrays completed	Count the Number of Ideal Arrays	Open
Mark Count the Number of Incremovable Subarrays I completed	Count the Number of Incremovable Subarrays I	Open
Mark Count the Number of Incremovable Subarrays II completed	Count the Number of Incremovable Subarrays II	Open
Mark Count the Number of Infection Sequences completed	Count the Number of Infection Sequences	Open
Mark Count the Number of Inversions completed	Count the Number of Inversions	Open
Mark Count the Number of K-Big Indices completed	Count the Number of K-Big Indices	Open
Mark Count the Number of K-Free Subsets completed	Count the Number of K-Free Subsets	Open
Mark Count the Number of Powerful Integers completed	Count the Number of Powerful Integers	Open
Mark Count the Number of Special Characters I completed	Count the Number of Special Characters I	Open
Mark Count the Number of Special Characters II completed	Count the Number of Special Characters II	Open
Mark Count the Number of Square-Free Subsets completed	Count the Number of Square-Free Subsets	Open
Mark Count the Number of Substrings With Dominant Ones completed	Count the Number of Substrings With Dominant Ones	Open
Mark Count the Number of Vowel Strings in Range completed	Count the Number of Vowel Strings in Range	Open
Mark Count The Number of Winning Sequences completed	Count The Number of Winning Sequences	Open
Mark Count The Repetitions completed	Count The Repetitions	Open
Mark Count Total Number of Colored Cells completed	Count Total Number of Colored Cells	Open
Mark Count Triplets That Can Form Two Arrays of Equal XOR completed	Count Triplets That Can Form Two Arrays of Equal XOR	Open
Mark Count Triplets with Even XOR Set Bits I completed	Count Triplets with Even XOR Set Bits I	Open
Mark Count Triplets with Even XOR Set Bits II completed	Count Triplets with Even XOR Set Bits II	Open
Mark Count Unguarded Cells in the Grid completed	Count Unguarded Cells in the Grid	Open
Mark Count Unhappy Friends completed	Count Unhappy Friends	Open
Mark Count Unique Characters of All Substrings of a Given String completed	Count Unique Characters of All Substrings of a Given String	Open
Mark Count Univalue Subtrees completed	Count Univalue Subtrees	Open
Mark Count Unreachable Pairs of Nodes in an Undirected Graph completed	Count Unreachable Pairs of Nodes in an Undirected Graph	Open
Mark Count Valid Paths in a Tree completed	Count Valid Paths in a Tree	Open
Mark Count Valid Sequences completed	Count Valid Sequences	Open
Mark Count Visited Nodes in a Directed Graph completed	Count Visited Nodes in a Directed Graph	Open
Mark Count Vowels Permutation completed	Count Vowels Permutation	Open
Mark Count Vowel Strings in Ranges completed	Count Vowel Strings in Ranges	Open
Mark Count Vowel Substrings of a String completed	Count Vowel Substrings of a String	Open
Mark Count Ways To Build Good Strings completed	Count Ways To Build Good Strings	Open
Mark Count Ways to Build Rooms in an Ant Colony completed	Count Ways to Build Rooms in an Ant Colony	Open
Mark Count Ways to Distribute Candies completed	Count Ways to Distribute Candies	Open