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Combinatorics

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All Combinatorics problems

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Problems

⊣ 62 Unique Paths
⊣ 458 Poor Pigs
⊣ 920 Number of Music Playlists
⊣ 1201 Ugly Number III
⊣ 1359 Count All Valid Pickup and Delivery Options
⊣ 1467 Probability of a Two Boxes Having The Same Number of Distinct Balls
⊣ 1569 Number of Ways to Reorder Array to Get Same BST
⊣ 1621 Number of Sets of K Non-Overlapping Line Segments
⊣ 1641 Count Sorted Vowel Strings
⊣ 1643 Kth Smallest Instructions
⊣ 1735 Count Ways to Make Array With Product
⊣ 1830 Minimum Number of Operations to Make String Sorted
⊣ 1863 Sum of All Subset XOR Totals
⊣ 1866 Number of Ways to Rearrange Sticks With K Sticks Visible
⊣ 1916 Count Ways to Build Rooms in an Ant Colony
⊣ 2063 Vowels of All Substrings
⊣ 2221 Find Triangular Sum of an Array
⊣ 2338 Count the Number of Ideal Arrays
⊣ 2400 Number of Ways to Reach a Position After Exactly k Steps
⊣ 2514 Count Anagrams
⊣ 2597 The Number of Beautiful Subsets
⊣ 2842 Count K-Subsequences of a String With Maximum Beauty
⊣ 2928 Distribute Candies Among Children I
⊣ 2929 Distribute Candies Among Children II
⊣ 2930 Number of Strings Which Can Be Rearranged to Contain Substring
⊣ 2954 Count the Number of Infection Sequences
⊣ 2963 Count the Number of Good Partitions
⊣ 3116 Kth Smallest Amount With Single Denomination Combination
⊣ 3128 Right Triangles
⊣ 3154 Find Number of Ways to Reach the K-th Stair
⊣ 3179 Find the N-th Value After K Seconds
⊣ 3250 Find the Count of Monotonic Pairs I
⊣ 3251 Find the Count of Monotonic Pairs II
⊣ 3272 Find the Count of Good Integers
⊣ 3312 Sorted GCD Pair Queries (PRO)
⊣ 3317 Find the Number of Possible Ways for an Event
⊣ 3343 Count Number of Balanced Permutations
⊣ 3352 Count K-Reducible Numbers Less Than N
⊣ 3395 Subsequences with a Unique Middle Mode I
⊣ 3405 Count the Number of Arrays with K Matching Adjacent Elements
⊣ 3426 Manhattan Distances of All Arrangements of Pieces
⊣ 3428 Maximum and Minimum Sums of at Most Size K Subsequences
⊣ 3461 Check If Digits Are Equal in String After Operations I
⊣ 3463 Check If Digits Are Equal in String After Operations II
⊣ 3470 Permutations IV
⊣ 3518 Smallest Palindromic Rearrangement II
⊣ 3539 Find Sum of Array Product of Magical Sequences
⊣ 3577 Count the Number of Computer Unlocking Permutations
⊣ 3621 Number of Integers With Popcount-Depth Equal to K I
⊣ 3725 Count Ways to Choose Coprime Integers from Rows
⊣ 3757 Number of Effective Subsequences
⊣ 3821 Find Nth Smallest Integer With K One Bits