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👍1
https://leetcode.com/problems/minimum-cost-to-hire-k-workers/description/
Min cost of
Min cost of
k workers each doing quality[i] work for fair rate #hard #heap #sorting👍2