Dusa And The Yobis

Modified from the 2024 CCC Jr. Competition

Dusa eats Yobis, but only Yobis of a certain size.

If Dusa encounters a Yobi that is smaller than itself, it eats the Yobi, and absorbs its size. For example, if Dusa is of size 10 and it encounters a Yobi of size 6, Dusa eats the Yobi and expands to size 10 + 6 = 16.

If Dusa encounters a Yobi that is the same size as itself or larger, Dusa runs away without eating the Yobi.

Dusa is currently facing a line of Yobis and will encounter them in order. Dusa is guaranteed to eventually encounter a Yobi that causes it to run away. Your job is to determine Dusa’s size when this happens.

File Specification

Create the executable file ~/js/dusa.js
The top of the file must be a block comment with your name.
- Optionally include the date and a brief description of the program.

/**

* Author: Mr. Squirrel

* Date: Feb. 2025

* Description: Dusa and the Yobis (Jr. CCC 2024)

**/

The first line of code must be:

'use strict';

Input Specification

Input values will be placed on the command-line as arguments (we will learn to read from a file soon enough!).

The first input value is a positive integer, D, representing Dusa’s starting size.

The remaining input values contain positive integers representing the sizes of the Yobis in order.

Output Specification

Output the positive integer, R, which is Dusa’s size when it eventually runs away.

Sample Input 1

./dusa.js 5 3 2 9 20 22 14

Output for Sample Input 1

Explanation of Output for Sample Input 1

Dusa is large enough to eat the Yobi of size 3. This brings Dusa’s size to 8. Dusa is large enough to eat the Yobi of size 2. This brings Dusa’s size to 10. Dusa is large enough to eat the Yobi of size 9. This brings Dusa’s size to 19. The Yobi of size 20 causes Dusa to run away.

Sample Input 2

./dusa.js 10 10 3 5

Output for Sample Input 2

Explanation of Output for Sample Input 2

The Yobi of size 10 causes Dusa to run away, leaving its size unchanged.

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