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Count Ways to Make Array With Product

arraymathdynamic programming

Problem Statement

You are given a 2D integer array, queries . For each queries[i] , where queries[i] = [n _i , k _i ] , find the number of different ways you can place positive integers into an array of size n _i such that the product of the integers is k _i . As the number of ways may be too large, the answer to the i ^th query is the number of ways modulo 10 ^9 + 7 .

Return an integer array answer where answer.length == queries.length , and answer[i] is the answer to the i ^th query.

Examples

Example 1
Input: queries = [[2,6],[5,1],[73,660]]
Output: [4,1,50734910]
Each query is independent. [2,6]: There are 4 ways to fill an array of size 2 that multiply to 6: [1,6], [2,3], [3,2], [6,1]. [5,1]: There is 1 way to fill an array of size 5 that multiply to 1: [1,1,1,1,1]. [73,660]: There are 1050734917 ways to fill an array of size 73 that multiply to 660. 1050734917 modulo 10 ^9 + 7 = 50734910.
Example 2
Input: queries = [[1,1],[2,2],[3,3],[4,4],[5,5]]
Output: [1,2,3,10,5]

Constraints

1 <= queries.length <= 10 ^4
1 <= n _i , k _i <= 10 ^4
😤
Hard
Difficulty
Topic Info
ModuleDSA
CategoryArray
Sub-topicMath
Tags
arraymathdynamic programmingcombinatoricsnumber theory
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