https://leetcode.com/problems/smallest-range-covering-elements-from-k-lists/description/


Smallest intersection of k sorted lists #medium #heap #tree_set

https://leetcode.com/problems/maximal-score-after-applying-k-operations/description/


Replace max(arr) with ceil(max/3) k times #medium #heap

https://leetcode.com/problems/kth-largest-sum-in-a-binary-tree/description/

`k`th largest level-sum in a tree #bfs #heap #quickselect

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-with-sum-at-least-k/description/


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

https://leetcode.com/problems/maximum-average-pass-ratio/description/

Arrange passed students to improve average score #medium #heap

https://leetcode.com/problems/minimum-operations-to-exceed-threshold-value-ii/description/


Count nums += min(x,y)*2+max(x,y) < k #medium #heap

Min rank[i] * count^2 to fix all cars #medium #binary_search #heap


https://leetcode.com/problems/minimum-time-to-repair-cars/description

Running queries of increasing BFS #hard #bfs #heap


https://leetcode.com/problems/maximum-number-of-points-from-grid-queries/description/

https://leetcode.com/problems/zero-array-transformation-iii/description


Max removed queries still zero-fy an array #medium #heap

# 7.07.2025
[1353. Maximum Number of Events That Can Be Attended](https://leetcode.com/problems/maximum-number-of-events-that-can-be-attended/description/) medium


Max attended events #medium #heap

# 11.07.2025
[2402. Meeting Rooms III](https://leetcode.com/problems/meeting-rooms-iii/description) hard


Most frequent meeting room #hard #heap

# 18.07.2025
[2163. Minimum Difference in Sums After Removal of Elements](https://leetcode.com/problems/minimum-difference-in-sums-after-removal-of-elements/description/) hard


Min first half - second half after removing n/3 #hard #heap