88 lines
2.9 KiB
Python
88 lines
2.9 KiB
Python
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"""
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--- Day 1: Calorie Counting ---
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Santa's reindeer typically eat regular reindeer food, but they need a
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lot of magical energy to deliver presents on Christmas. For that, their
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favorite snack is a special type of star fruit that only grows deep in
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the jungle. The Elves have brought you on their annual expedition to
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the grove where the fruit grows.
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To supply enough magical energy, the expedition needs to retrieve a
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minimum of fifty stars by December 25th. Although the Elves assure you
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that the grove has plenty of fruit, you decide to grab any fruit you
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see along the way, just in case.
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Collect stars by solving puzzles. Two puzzles will be made available on
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each day in the Advent calendar; the second puzzle is unlocked when you
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complete the first. Each puzzle grants one star. Good luck!
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The jungle must be too overgrown and difficult to navigate in vehicles
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or access from the air; the Elves' expedition traditionally goes on
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foot. As your boats approach land, the Elves begin taking inventory of
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their supplies. One important consideration is food - in particular,
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the number of Calories each Elf is carrying (your puzzle input).
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The Elves take turns writing down the number of Calories contained by
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the various meals, snacks, rations, etc. that they've brought with
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them, one item per line. Each Elf separates their own inventory from
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the previous Elf's inventory (if any) by a blank line.
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For example, suppose the Elves finish writing their items' Calories and
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end up with the following list:
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1000
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2000
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3000
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4000
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5000
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6000
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7000
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8000
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9000
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10000
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This list represents the Calories of the food carried by five Elves:
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- The first Elf is carrying food with 1000, 2000, and 3000 Calories, a
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total of 6000 Calories.
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- The second Elf is carrying one food item with 4000 Calories.
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- The third Elf is carrying food with 5000 and 6000 Calories, a total
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of 11000 Calories.
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- The fourth Elf is carrying food with 7000, 8000, and 9000 Calories, a
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total of 24000 Calories.
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- The fifth Elf is carrying one food item with 10000 Calories.
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In case the Elves get hungry and need extra snacks, they need to know
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which Elf to ask: they'd like to know how many Calories are being
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carried by the Elf carrying the most Calories. In the example above,
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this is 24000 (carried by the fourth Elf).
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Find the Elf carrying the most Calories. How many total Calories is
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that Elf carrying?
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"""
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def main():
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with open("input.txt", "r", encoding="utf-8") as f:
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calories_per_elf = [0]
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for line in f:
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if line.strip():
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calories_per_elf[-1] += int(line.strip())
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else:
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calories_per_elf.append(0)
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continue
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highest_calories = max(*calories_per_elf)
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index_of_highest = calories_per_elf.index(highest_calories)
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print(f"Elf #{index_of_highest+1} is carrying {highest_calories} calories")
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if __name__ == "__main__":
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main()
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