Summary

Let’s consider a function is defined named F as follows F(n)= (1) +(2*3) + (4*5*6) ... upto n terms.

We will define the class that have two member functions ‘f’, and ‘sequence’ 

Solutions

Explanation

mod variable:

• This variable is set to 

1

0

9

+

7

10 

9

•  +7, which is a common choice for modulo operations in competitive programming to prevent integer overflow.

f function:

• This function calculates the sum of terms in a sequence.

• term: Current term of the sequence.

• start: Value of the first term.

sequence function:

• This function is the entry point for calculating the sequence.

• n: Total number of terms in the sequence.

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