bayleef needs to spend time trying to get his explainations better

f(n,1) could any one explain this

Can anyone tell what the excatly function f(n,d) is ?

Let s(d) be the sum of all the solutions for which f(n,d) = n.

Does this mean that s(d) is the total number of solutions, or it is the summation of the number n for which the statement is true? The example in the instructions doesn't help clarify this...

I am not able to get problem exactely. Can any one Around Here Who tell about problem statement clear to me just explain the problem not the solution.