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Cube Sum Pairs

Easy
0/40
Average time to solve is 15m
109 upvotes
Asked in companies
AdobeBarclaysFreshworks

Problem statement

You are given a positive integer N, and you have to find the number of ways to represent N as a sum of cubes of two integers(let’s say A and B), such that:

N = A^3 + B^3.

Note:

1. A should be greater than or equal to one (A>=1).
2. B should be greater than or equal to zero (B>=0).
3. (A, B) and (B, A) should be considered different solutions, if A is not equal to B, i.e (A, B) and (B, A) will not be distinct if A=B.
Detailed explanation ( Input/output format, Notes, Images )
Constraints:
1 <= T <= 10^3
1 <= N <= 10^8
Time Limit: 1 sec.
Sample Input 1:
1
9
Sample Output 1:
2
Explanation For Sample Input 1:
There are 2 ways to represent N in the (A^3 + B^3) form ie. {(1, 2), (2, 1)}.
Eg. 1^3 + 2^3 = 9 and 2^3 + 1^3 = 9. 
Sample Input 2:
1
27
Sample Output 2:
1
Explanation For Sample Input 2:
There is only 1 way to represent N in the (A^3 + B^3) form ie. {(3, 0)}.
Eg. 3^3 + 0^3 = 27.
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