main.yml

---
- name: Split input into separate elves
  ansible.builtin.set_fact:
    elfs: "{{ day1_input | split('\n\n') }}"

- name: Split the calories from each elf
  ansible.builtin.set_fact:
    elf_calories: "{{ elf_calories | default([]) + [item | split('\n') | map('int') ] }}"
  loop: "{{ elfs }}"

- name: Add all calories of each elf together
  ansible.builtin.set_fact:
    elf_total_calories: "{{ elf_total_calories | default([]) + [item | sum] }}"
  loop: "{{ elf_calories }}"

- name: ANSWER TO PART 1 | Return the highest total calories
  tags: part1
  ansible.builtin.debug:
    msg: "{{ elf_total_calories | max }}"

- name: Sort the list by size
  tags: part2
  ansible.builtin.set_fact:
    sorted_elfs: "{{ elf_total_calories | sort(reverse=True) }}"

- name: ANSWER TO PART 2 | Return the calories of the top 3 elves
  tags: part2
  ansible.builtin.debug:
    msg: "{{ [sorted_elfs[0], sorted_elfs[1], sorted_elfs[2]] | sum }}"

...