https://leetcode.com/problems/k-th-smallest-prime-fraction/description/

k`th `arr[i]/arr[j], i < j, arr[i] < arr[j] #medium #heap #binary_search

https://leetcode.com/problems/sum-of-square-numbers/description/

Is c sum of squares? #medium #binary_search

https://leetcode.com/problems/minimum-number-of-days-to-make-m-bouquets/description/

Min days to take m k-subarrays #medium #binary_search

https://leetcode.com/problems/magnetic-force-between-two-balls/description/

Max shortest distance between m positions #medium #binary_search

https://leetcode.com/problems/find-k-th-smallest-pair-distance/description/

`k`th smallest pairs diff in array #hard #binary_search #two_pointers

https://leetcode.com/problems/my-calendar-i/description/

Insert non-intersection interval #medium #binary_search

https://leetcode.com/problems/minimum-number-of-removals-to-make-mountain-array/description/


Min removes to make a mountain #hard #dynamic_programming #binary_search #lis

https://leetcode.com/problems/prime-subtraction-operation/description/


Increased sequence by subtracting primes? #medium #binary_search

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