cpp-flashcards/org/study_deck_02/dsa/binary-search/2300-successful-pairs-of-spells-and-potions.org

#+ANKI_DECK: study_deck_02
* TODO 2300. Successful Pairs of Spells and Potions :medium:
:PROPERTIES:
:NEETCODE: [[file:../../roadmap.org::*2300. Successful Pairs of Spells and Potions][2300. Successful Pairs of Spells and Potions]]
:END:

You are given two positive integer arrays ~spells~ and ~potions~, of length ~n~ and ~m~ respectively, where ~spells[i]~ represents the strength of the ~i^{th}~ spell and ~potions[j]~ represents the strength of the ~j^{th}~ potion.

You are also given an integer ~success~. A spell and potion pair is considered *successful* if the *product* of their strengths is *at least* ~success~.

Return /an integer array /~pairs~/ of length /~n~/ where /~pairs[i]~/ is the number of *potions* that will form a successful pair with the /~i^{th}~/ spell./

*Example 1:*


#+begin_src
Input: spells = [5,1,3], potions = [1,2,3,4,5], success = 7
Output: [4,0,3]
Explanation:
- 0th spell: 5 * [1,2,3,4,5] = [5,10,15,20,25]. 4 pairs are successful.
- 1st spell: 1 * [1,2,3,4,5] = [1,2,3,4,5]. 0 pairs are successful.
- 2nd spell: 3 * [1,2,3,4,5] = [3,6,9,12,15]. 3 pairs are successful.
Thus, [4,0,3] is returned.
#+end_src


*Example 2:*


#+begin_src
Input: spells = [3,1,2], potions = [8,5,8], success = 16
Output: [2,0,2]
Explanation:
- 0th spell: 3 * [8,5,8] = [24,15,24]. 2 pairs are successful.
- 1st spell: 1 * [8,5,8] = [8,5,8]. 0 pairs are successful. 
- 2nd spell: 2 * [8,5,8] = [16,10,16]. 2 pairs are successful. 
Thus, [2,0,2] is returned.
#+end_src


*Constraints:*

 - ~n == spells.length~

 - ~m == potions.length~

 - ~1 <= n, m <= 10^{5}~

 - ~1 <= spells[i], potions[i] <= 10^{5}~

 - ~1 <= success <= 10^{10}~

** TODO Approach
Write your approach here.

** TODO Python
#+begin_src python
class Solution:
    def successfulPairs(self, spells: List[int], potions: List[int], success: int) -> List[int]:
#+end_src

** TODO C++
#+begin_src cpp
class Solution {
public:
    vector<int> successfulPairs(vector<int>& spells, vector<int>& potions, long long success) {
        
    }
};
#+end_src