https://leetcode.com/problems/most-beautiful-item-for-each-query/description/


Queries of max beauty for q[i] price #medium #binary_search

https://leetcode.com/problems/count-the-number-of-fair-pairs/description/



Count pairs a[i] + a[j] in lower..upper #medium #binary_search #two_pointers

https://leetcode.com/problems/minimized-maximum-of-products-distributed-to-any-store/description/


Min of max of quantities spread by n single-type stores #medium #binary_search #heap

https://leetcode.com/problems/shortest-subarray-to-be-removed-to-make-array-sorted/description/

Min subarray remove to make array sorted #medium #two_pointers

https://leetcode.com/problems/find-the-power-of-k-size-subarrays-i/description/

Tops of consecutive increasing windows #medium #sliding_window

https://leetcode.com/problems/shortest-subarray-with-sum-at-least-k/description/


Min subarray with sum at least k #hard #monotonic_queue #heap

https://leetcode.com/problems/defuse-the-bomb/description/


Next +-k window sums #easy #sliding_window

https://leetcode.com/problems/maximum-sum-of-distinct-subarrays-with-length-k/description/


Max k-unique window sum #medium #sliding_window

https://leetcode.com/problems/take-k-of-each-character-from-left-and-right/description/


Min take k of a,b,c from head or tail #medium #two_pointers

https://leetcode.com/problems/count-unguarded-cells-in-the-grid/description/


Count unseen cells in 2D matrix with guards and walls #medium #matrix

https://leetcode.com/problems/flip-columns-for-maximum-number-of-equal-rows/description/


Max same-bit-rows after flipping columns in 01-2D matrix #medium #matrix

https://leetcode.com/problems/rotating-the-box/description/


Rotate matrix and simulate the fall #medium #matrix

https://leetcode.com/problems/maximum-matrix-sum/description/


Max sum of 2D matrix after multiply by -1 adjacent cells #medium

https://leetcode.com/problems/sliding-puzzle/description/


Steps to solve slide puzzle #hard #bfs

https://leetcode.com/problems/find-champion-ii/description/


Root of the graph #medium

https://leetcode.com/problems/shortest-distance-after-road-addition-queries-i/description/


Query shortest paths after adding new edges #medium #bfs

https://leetcode.com/problems/minimum-obstacle-removal-to-reach-corner/description/


Min removals to travel first-last in 2D grid #hard #bfs #dijkstra

https://leetcode.com/problems/minimum-time-to-visit-a-cell-in-a-grid/description/


Min time start-end 4-d travel in 2D matrix with waiting #hard #dijkstra

https://leetcode.com/problems/valid-arrangement-of-pairs/description/


Hierholzer's algorithm #hard #graph

https://leetcode.com/problems/check-if-n-and-its-double-exist/description/

Any i != j && a[i] = 2 * a[j] #easy