Programming Part 1:

Write a program in C or Java that takes the integer 1 billion (1,000,000,000) from the command line or from user input. Once the data is input program three threads to:

1. Child Thread 1:
   1. Displays its ID
   2. Find incremental sum of all the numbers until and including 1,000,000,000
   3. Exit itself once completed the operation

2. Child Thread 2:
   1. Displays its ID
   2. Find incremental sum of all the even numbers until and including 1,000,000,000
   3. Exit itself once completed the operation

3. Parent / Main Thread:
   1. Displays its ID
   2. Creates Child Threads 1 and 2
   3. Merges Child Thread 1 and 2
   4. Displays the sum of all the numbers returned by Child Thread 1
   5. Displays the sum of all the numbers returned by Child Thread 2
   6. Calculates the following:
      1. sum of all the numbers returned by Child Thread 1 / sum of all the numbers returned by Child Thread 2
   7. Displays the result of above calculation

Analysis Part 1:

Analyze the time taken by the program to complete, e.g., review the usage of cores using Activity Monitor program in Ubuntu and find a way to monitor the time taken by the program to complete its execution. Furthermore, please make sure the calculations made by the program are correct and accurate.