aoc2023: day 2 solution

4 files changed, 273 insertions, 0 deletions

diff --git a/aoc2023/day2/Cargo.lock b/aoc2023/day2/Cargo.lock
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+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "day2"
+version = "0.1.0"
diff --git a/aoc2023/day2/Cargo.toml b/aoc2023/day2/Cargo.toml
new file mode 100644
index 0000000..8aa34bb
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+++ b/aoc2023/day2/Cargo.toml
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+[package]
+name = "day2"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
diff --git a/aoc2023/day2/input b/aoc2023/day2/input
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index 0000000..145b929
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+++ b/aoc2023/day2/input
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+Game 1: 1 green, 2 red, 6 blue; 4 red, 1 green, 3 blue; 7 blue, 5 green; 6 blue, 2 red, 1 green
+Game 2: 1 green, 17 red; 1 blue, 6 red, 7 green; 2 blue, 4 red, 7 green; 1 green, 6 red, 2 blue
+Game 3: 6 red, 15 blue, 15 green; 1 green, 4 red, 12 blue; 14 blue, 9 red, 1 green; 2 red, 15 blue, 12 green
+Game 4: 8 green, 10 blue, 6 red; 20 blue, 4 red; 17 blue, 2 green, 3 red; 4 blue, 2 green, 3 red; 10 red, 3 blue, 3 green; 5 green, 14 blue, 6 red
+Game 5: 3 green, 8 blue, 2 red; 11 red, 6 green, 11 blue; 8 red, 5 blue, 2 green
+Game 6: 2 blue, 12 red, 2 green; 3 green, 2 red; 3 green, 3 blue, 10 red; 7 red, 2 blue, 4 green; 1 red, 2 blue, 5 green
+Game 7: 1 red, 8 blue, 2 green; 1 red, 2 blue, 12 green; 1 blue; 3 blue, 3 green
+Game 8: 10 green, 4 red, 4 blue; 12 green, 1 blue; 1 red, 13 green, 2 blue; 12 green, 3 blue; 9 green, 7 red
+Game 9: 1 green, 1 blue, 3 red; 3 blue, 3 red, 8 green; 6 blue, 4 red, 6 green; 2 red, 7 green; 1 red, 10 green, 13 blue; 5 red, 1 blue, 1 green
+Game 10: 9 green, 3 red, 3 blue; 12 green, 2 blue; 18 green, 1 blue; 14 green; 2 blue, 9 green, 2 red
+Game 11: 14 green; 2 green, 2 red, 11 blue; 9 blue, 3 green
+Game 12: 9 green, 3 blue, 8 red; 1 green, 2 blue, 3 red; 4 blue, 8 red, 10 green; 3 blue, 7 red, 8 green; 3 blue, 5 red, 7 green; 2 blue, 5 green
+Game 13: 6 red, 1 blue, 10 green; 7 red, 1 green; 8 red, 2 green, 1 blue
+Game 14: 2 red, 4 blue, 2 green; 2 green, 5 red, 1 blue; 1 red, 6 blue
+Game 15: 7 blue, 3 red; 13 blue, 8 red, 1 green; 1 green, 5 red, 13 blue; 8 red, 5 blue; 4 red, 3 blue, 1 green; 12 blue, 8 red, 1 green
+Game 16: 5 blue, 1 green, 2 red; 2 blue, 20 green; 4 blue, 1 red, 17 green; 10 green, 5 blue, 2 red
+Game 17: 6 red, 13 blue, 8 green; 12 blue, 7 green, 9 red; 19 blue, 5 red; 2 green, 8 red, 14 blue
+Game 18: 5 red, 2 green, 1 blue; 8 blue, 17 red, 9 green; 2 blue, 1 green; 4 blue, 10 red; 5 blue, 4 red, 6 green
+Game 19: 5 red, 12 green; 8 red, 13 green, 1 blue; 1 red, 1 green, 3 blue; 5 green, 5 red
+Game 20: 11 red, 8 blue; 9 red, 2 green, 13 blue; 2 red, 1 green, 2 blue; 1 green, 9 blue, 13 red; 3 blue, 5 red, 1 green
+Game 21: 1 red, 4 green, 11 blue; 3 green, 15 blue; 6 green, 7 red, 14 blue; 15 blue, 6 green, 10 red; 6 red, 16 blue, 2 green
+Game 22: 2 blue, 15 green, 2 red; 3 blue, 6 green, 1 red; 2 blue, 5 green, 1 red; 6 green, 2 red, 2 blue; 4 green, 2 blue; 4 blue, 1 red, 15 green
+Game 23: 2 blue, 1 green, 12 red; 5 blue, 11 red, 4 green; 12 red, 4 blue; 12 red, 2 green, 5 blue
+Game 24: 4 blue, 7 red; 3 red, 3 blue; 1 red, 4 blue; 2 green, 6 red, 6 blue; 7 red, 1 green, 2 blue; 6 red, 1 blue, 1 green
+Game 25: 5 green, 9 blue; 6 green, 7 red, 2 blue; 1 red, 3 blue, 7 green; 9 blue, 3 red; 5 green, 9 blue, 2 red
+Game 26: 6 red, 4 blue; 2 blue, 4 green; 3 green, 5 red, 5 blue; 4 green, 6 red, 3 blue; 4 green, 7 red, 4 blue
+Game 27: 15 green, 1 blue, 12 red; 12 red, 1 green; 1 red, 1 blue, 5 green; 13 green, 6 red, 1 blue; 5 red, 1 blue, 1 green; 11 red, 14 green
+Game 28: 3 blue, 2 green, 10 red; 5 blue, 2 green; 4 green, 3 blue, 11 red
+Game 29: 10 blue, 2 red; 17 green, 7 blue, 2 red; 1 blue, 8 green, 1 red; 10 green, 2 red, 3 blue
+Game 30: 10 green, 8 red, 1 blue; 4 blue, 7 green, 14 red; 2 blue, 14 red, 11 green; 1 blue, 13 green, 12 red; 5 blue, 2 red, 4 green; 4 green, 5 red
+Game 31: 4 green, 11 red, 11 blue; 3 blue, 11 red; 5 blue, 7 red, 3 green; 10 blue, 5 green, 1 red
+Game 32: 4 red, 8 blue, 1 green; 14 red, 7 blue, 4 green; 13 red, 3 blue, 9 green; 3 red, 1 green, 8 blue; 8 green, 8 red, 5 blue
+Game 33: 6 red, 10 blue, 7 green; 19 blue, 1 red; 6 green, 11 red, 11 blue; 2 green, 2 blue, 12 red; 3 red, 13 blue, 7 green; 6 green, 4 red, 2 blue
+Game 34: 3 red, 3 green, 15 blue; 7 green, 15 blue; 3 red, 2 green, 8 blue; 19 green, 18 blue
+Game 35: 2 green, 1 blue; 2 green, 2 blue, 1 red; 3 blue, 1 red, 1 green; 4 blue, 1 red
+Game 36: 1 red, 11 green; 1 green, 1 blue; 8 blue; 2 green, 3 red; 1 red
+Game 37: 4 blue, 3 red; 12 blue, 13 red; 2 red, 2 green, 8 blue
+Game 38: 8 red, 2 blue; 1 green, 2 red; 8 red, 2 green, 1 blue; 16 red, 2 green; 7 red, 2 blue, 2 green
+Game 39: 6 green, 1 blue, 5 red; 14 green, 8 blue, 6 red; 8 red, 10 blue, 1 green; 14 green, 9 red; 17 blue, 5 red; 1 blue, 7 green, 1 red
+Game 40: 4 red, 8 blue, 3 green; 13 blue, 1 red; 3 blue, 7 red, 3 green; 3 green, 8 blue, 10 red; 3 green, 20 blue, 5 red
+Game 41: 1 blue, 2 green; 11 green, 2 blue; 5 blue; 15 red, 8 green, 5 blue
+Game 42: 1 green, 12 blue, 1 red; 6 blue, 1 green, 5 red; 1 red, 11 blue, 4 green; 3 red, 17 blue, 1 green; 1 red, 11 blue; 9 blue, 6 green, 3 red
+Game 43: 16 blue, 13 green, 1 red; 17 blue, 7 red, 10 green; 13 green, 5 red, 7 blue
+Game 44: 2 blue, 4 red; 15 green, 7 red; 2 green, 1 blue; 6 red, 13 green
+Game 45: 5 green, 1 blue, 8 red; 4 red, 1 blue, 5 green; 1 green, 3 red; 1 green, 2 blue, 6 red; 4 red, 3 green, 2 blue; 2 red, 2 blue, 5 green
+Game 46: 1 green, 1 red, 6 blue; 11 blue; 1 red, 1 green, 7 blue; 8 blue; 1 green, 7 blue, 2 red
+Game 47: 7 green, 9 blue, 7 red; 11 red, 13 blue, 5 green; 12 green, 12 blue, 5 red; 4 blue, 8 green, 7 red
+Game 48: 11 green, 7 red, 2 blue; 2 blue, 10 green, 3 red; 1 blue, 2 red, 1 green; 4 green, 2 red, 7 blue; 7 red, 4 green, 2 blue
+Game 49: 1 red, 2 blue, 5 green; 2 green, 4 blue; 5 blue, 2 green, 1 red; 9 blue, 1 green; 7 blue
+Game 50: 8 green, 9 blue, 2 red; 2 green, 5 blue; 14 green, 1 red, 8 blue
+Game 51: 1 green, 2 blue; 12 blue, 1 red; 2 blue
+Game 52: 3 red, 2 blue, 2 green; 4 red, 4 green, 7 blue; 2 blue, 4 red, 1 green; 3 green; 1 red, 9 green, 7 blue
+Game 53: 9 blue, 12 red, 7 green; 8 blue, 6 green; 1 green, 8 blue, 9 red; 12 red, 6 green; 9 blue, 14 red, 10 green; 7 red, 3 green, 5 blue
+Game 54: 8 green, 5 blue, 5 red; 4 green, 13 blue, 2 red; 2 blue, 5 red, 1 green; 3 red, 3 green, 10 blue
+Game 55: 17 red, 15 green, 17 blue; 6 red, 5 green, 7 blue; 17 green, 6 blue, 5 red
+Game 56: 7 blue, 6 red, 7 green; 10 green, 3 red; 9 red, 3 blue, 5 green
+Game 57: 5 blue, 11 red, 1 green; 13 red, 1 green, 2 blue; 2 blue, 4 red; 1 green, 10 red, 1 blue; 1 green, 8 red
+Game 58: 1 red, 2 green, 9 blue; 1 green, 1 blue, 1 red; 2 red, 6 blue, 2 green; 14 blue, 1 green, 1 red; 5 blue, 1 red, 2 green; 14 blue, 2 green
+Game 59: 9 green, 2 blue, 5 red; 9 red, 5 green; 10 red, 1 blue, 8 green
+Game 60: 8 blue, 6 red, 4 green; 3 red, 12 green, 9 blue; 4 blue, 5 red, 5 green; 4 red, 8 blue; 7 green, 12 blue, 6 red
+Game 61: 5 blue, 13 red, 1 green; 5 red, 5 blue; 1 red, 3 blue; 1 green, 9 red; 10 red, 3 blue, 1 green
+Game 62: 1 blue, 13 red; 4 blue, 5 red; 11 blue, 8 red, 1 green
+Game 63: 14 blue, 5 red; 9 blue, 14 green, 5 red; 3 red, 8 green, 15 blue; 4 blue, 15 green, 6 red
+Game 64: 13 red, 6 blue, 11 green; 12 red, 1 blue, 8 green; 1 red, 17 green; 13 red, 12 green, 7 blue
+Game 65: 4 red, 17 blue, 3 green; 2 green, 12 blue, 9 red; 2 green, 17 blue, 5 red; 1 red, 1 green, 4 blue; 9 red, 16 blue; 7 blue, 9 red
+Game 66: 10 blue, 10 green, 5 red; 10 green, 3 blue, 5 red; 1 red, 1 green, 10 blue; 2 green, 5 red, 20 blue; 8 blue, 11 green, 13 red; 2 green, 18 blue, 2 red
+Game 67: 6 red, 1 green; 5 red, 10 blue; 6 blue, 6 red
+Game 68: 4 green, 1 red, 5 blue; 5 red, 5 blue; 7 red, 6 green; 8 red, 1 blue
+Game 69: 2 blue, 11 red; 4 red, 6 green, 1 blue; 4 red, 1 blue, 14 green
+Game 70: 15 red, 8 blue, 5 green; 5 green, 2 red, 8 blue; 8 red, 3 green, 10 blue
+Game 71: 4 blue, 2 red; 12 green, 4 blue; 10 green
+Game 72: 3 blue, 4 green, 6 red; 6 red, 5 green, 8 blue; 10 red, 6 green, 5 blue; 1 green, 2 blue; 10 red, 5 blue, 4 green
+Game 73: 5 blue, 1 red; 1 green, 11 blue; 10 blue; 12 blue, 1 red; 1 red, 9 blue; 7 blue, 1 green, 1 red
+Game 74: 7 green, 6 blue, 7 red; 7 blue, 6 green, 15 red; 7 red, 5 blue, 1 green; 1 blue, 6 red, 8 green; 8 green, 14 red, 3 blue
+Game 75: 8 green, 3 red, 3 blue; 1 blue, 6 red, 7 green; 9 green, 3 blue; 3 blue, 9 green, 6 red; 4 blue, 1 red, 3 green; 4 green, 1 blue, 16 red
+Game 76: 4 blue, 3 green; 2 blue, 1 red, 6 green; 12 blue; 1 green, 14 blue
+Game 77: 5 green, 10 red, 11 blue; 3 red; 8 green, 6 red, 9 blue
+Game 78: 7 red, 7 green; 8 blue; 6 green, 7 red, 5 blue
+Game 79: 11 blue, 2 red, 4 green; 2 green, 3 red, 15 blue; 1 green, 15 blue, 1 red
+Game 80: 3 red, 17 green, 8 blue; 8 green, 10 blue; 4 green, 1 red, 14 blue
+Game 81: 17 green, 10 red, 10 blue; 9 green, 9 blue, 7 red; 11 red, 11 green, 4 blue; 15 blue, 5 red; 11 blue, 8 green, 15 red; 3 green, 16 red
+Game 82: 8 green, 9 blue, 1 red; 1 red, 8 green, 9 blue; 2 green, 12 blue
+Game 83: 2 green, 11 red, 20 blue; 20 blue, 1 green, 4 red; 2 green, 6 red, 20 blue; 17 blue, 10 red
+Game 84: 1 green, 9 red; 4 blue, 4 green; 1 green, 6 red, 14 blue
+Game 85: 5 red, 10 green, 9 blue; 8 blue, 3 green, 2 red; 4 blue, 14 green, 3 red; 5 red, 4 blue
+Game 86: 8 blue, 9 green, 5 red; 5 red, 10 green, 1 blue; 15 blue, 1 red, 2 green; 8 red, 8 blue, 10 green
+Game 87: 13 green, 2 red, 4 blue; 3 red, 11 green, 9 blue; 6 blue, 3 red, 12 green
+Game 88: 2 red, 7 blue, 3 green; 2 blue, 9 red; 9 red, 6 blue, 7 green; 6 green, 13 blue, 9 red; 6 green, 2 red, 15 blue; 1 red, 8 green, 7 blue
+Game 89: 11 red, 1 blue, 2 green; 6 blue, 5 green, 4 red; 15 red, 4 green, 5 blue; 11 red, 3 blue, 10 green; 6 blue, 13 green, 12 red
+Game 90: 2 red, 2 blue, 4 green; 2 red, 2 blue; 9 green, 1 red, 1 blue; 5 green, 1 red; 7 green, 2 red; 2 green, 1 blue
+Game 91: 5 blue, 3 red, 1 green; 1 red, 4 blue, 6 green; 6 blue, 6 green, 5 red
+Game 92: 16 green, 1 blue, 12 red; 18 green, 14 red, 1 blue; 16 red, 1 green; 4 blue, 16 red, 18 green
+Game 93: 9 red, 8 blue, 14 green; 1 blue, 1 green, 6 red; 4 blue, 4 red, 14 green
+Game 94: 11 green, 4 blue, 2 red; 1 red, 1 green, 1 blue; 4 red, 1 blue, 2 green
+Game 95: 5 blue, 2 red, 9 green; 5 blue, 8 green; 1 green, 15 blue; 5 red, 9 green, 5 blue; 3 green, 17 blue, 5 red
+Game 96: 2 green, 14 blue, 1 red; 3 green, 3 red, 14 blue; 2 red, 2 green, 13 blue
+Game 97: 2 green, 2 red; 2 blue, 1 green; 7 blue, 3 red
+Game 98: 2 red, 1 blue, 12 green; 2 blue, 10 green, 5 red; 11 green, 9 blue; 6 blue, 17 green; 7 blue, 9 green, 9 red; 1 red, 11 green, 9 blue
+Game 99: 2 green, 9 red, 1 blue; 3 green, 1 blue, 14 red; 5 green, 6 blue; 1 blue, 2 green, 3 red; 4 blue, 10 red, 1 green
+Game 100: 4 green, 4 blue, 15 red; 3 green, 1 red, 13 blue; 5 green, 5 blue, 10 red
diff --git a/aoc2023/day2/src/main.rs b/aoc2023/day2/src/main.rs
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+/*
+--- Day 2: Cube Conundrum ---
+
+You're launched high into the atmosphere! The apex of your trajectory just barely reaches the surface of a large island
+floating in the sky. You gently land in a fluffy pile of leaves. It's quite cold, but you don't see much snow. An Elf
+runs over to greet you.
+
+The Elf explains that you've arrived at Snow Island and apologizes for the lack of snow. He'll be happy to explain the
+situation, but it's a bit of a walk, so you have some time. They don't get many visitors up here; would you like to play
+a game in the meantime?
+
+As you walk, the Elf shows you a small bag and some cubes which are either red, green, or blue. Each time you play this
+game, he will hide a secret number of cubes of each color in the bag, and your goal is to figure out information about
+the number of cubes.
+
+To get information, once a bag has been loaded with cubes, the Elf will reach into the bag, grab a handful of random
+cubes, show them to you, and then put them back in the bag. He'll do this a few times per game.
+
+You play several games and record the information from each game (your puzzle input). Each game is listed with its ID
+number (like the 11 in Game 11: ...) followed by a semicolon-separated list of subsets of cubes that were revealed from
+the bag (like 3 red, 5 green, 4 blue).
+
+For example, the record of a few games might look like this:
+
+Game 1: 3 blue, 4 red; 1 red, 2 green, 6 blue; 2 green
+Game 2: 1 blue, 2 green; 3 green, 4 blue, 1 red; 1 green, 1 blue
+Game 3: 8 green, 6 blue, 20 red; 5 blue, 4 red, 13 green; 5 green, 1 red
+Game 4: 1 green, 3 red, 6 blue; 3 green, 6 red; 3 green, 15 blue, 14 red
+Game 5: 6 red, 1 blue, 3 green; 2 blue, 1 red, 2 green
+
+In game 1, three sets of cubes are revealed from the bag (and then put back again). The first set is 3 blue cubes and
+4 red cubes; the second set is 1 red cube, 2 green cubes, and 6 blue cubes; the third set is only 2 green cubes.
+
+The Elf would first like to know which games would have been possible if the bag contained only 12 red cubes, 13 green
+cubes, and 14 blue cubes?
+
+In the example above, games 1, 2, and 5 would have been possible if the bag had been loaded with that configuration.
+However, game 3 would have been impossible because at one point the Elf showed you 20 red cubes at once; similarly,
+game 4 would also have been impossible because the Elf showed you 15 blue cubes at once. If you add up the IDs of the
+games that would have been possible, you get 8.
+
+Determine which games would have been possible if the bag had been loaded with only 12 red cubes, 13 green cubes, and
+14 blue cubes. What is the sum of the IDs of those games?
+
+--- Part Two ---
+
+The Elf says they've stopped producing snow because they aren't getting any water! He isn't sure why the water stopped;
+however, he can show you how to get to the water source to check it out for yourself. It's just up ahead!
+
+As you continue your walk, the Elf poses a second question: in each game you played, what is the fewest number of cubes
+of each color that could have been in the bag to make the game possible?
+
+Again consider the example games from earlier:
+
+Game 1: 3 blue, 4 red; 1 red, 2 green, 6 blue; 2 green
+Game 2: 1 blue, 2 green; 3 green, 4 blue, 1 red; 1 green, 1 blue
+Game 3: 8 green, 6 blue, 20 red; 5 blue, 4 red, 13 green; 5 green, 1 red
+Game 4: 1 green, 3 red, 6 blue; 3 green, 6 red; 3 green, 15 blue, 14 red
+Game 5: 6 red, 1 blue, 3 green; 2 blue, 1 red, 2 green
+
+    In game 1, the game could have been played with as few as 4 red, 2 green, and 6 blue cubes. If any color had even
+    one fewer cube, the game would have been impossible.
+    Game 2 could have been played with a minimum of 1 red, 3 green, and 4 blue cubes.
+    Game 3 must have been played with at least 20 red, 13 green, and 6 blue cubes.
+    Game 4 required at least 14 red, 3 green, and 15 blue cubes.
+    Game 5 needed no fewer than 6 red, 3 green, and 2 blue cubes in the bag.
+
+The power of a set of cubes is equal to the numbers of red, green, and blue cubes multiplied together. The power of the
+minimum set of cubes in game 1 is 48. In games 2-5 it was 12, 1560, 630, and 36, respectively. Adding up these five
+powers produces the sum 2286.
+
+For each game, find the minimum set of cubes that must have been present. What is the sum of the power of these sets?
+
+ */
+
+use std::cmp::max;
+use std::fs;
+
+fn main() {
+    let input = fs::read_to_string("input").unwrap();
+
+    let max_red = 12;
+    let max_green = 13;
+    let max_blue = 14;
+
+    let games:Vec<(i32, Vec<(i32, i32, i32)>)> = input.lines()
+        .map(construct_game)
+        .collect();
+
+    let total = games.iter().filter_map(|game| {
+        for cubeset in game.1.clone() {
+            if cubeset.0 > max_red || cubeset.1 > max_green || cubeset.2 > max_blue {
+                println!("Game {} is invalid", game.0);
+                return None
+            }
+        }
+        println!("Game {} is valid", game.0);
+        Some(game.0)
+    }).reduce(|acc, game| acc + game).unwrap();
+
+    println!("Part one answer: {total}");
+
+    let power_total = games.iter()
+        .map(game_power)
+        .reduce(|acc, e| acc + e)
+        .unwrap();
+
+    println!("Part two answer: {power_total}");
+}
+
+fn construct_game(line: &str) -> (i32, Vec<(i32, i32, i32)>) {
+    let t = line.split_once(":").unwrap();
+
+    let n = t.0.trim_start_matches("Game ")
+        .parse::<i32>().expect("game number is valid");
+
+    let cubesets = t.1.split(";")
+        .map(parse_cubeset)
+        .collect();
+
+    (n, cubesets)
+}
+
+fn parse_cubeset(set: &str) -> (i32, i32, i32) {
+    let mut red = 0;
+    let mut green = 0;
+    let mut blue = 0;
+
+    set.split(",")
+        .for_each(|cubes| {
+            if cubes.contains("red") {
+                red += cubes.trim().split_once(" ").unwrap().0
+                    .parse::<i32>().expect("can parse red cubes");
+            } else if cubes.contains("green") {
+                green += cubes.trim().split_once(" ").unwrap().0
+                    .parse::<i32>().expect("can parse green cubes");
+            } else if cubes.contains("blue") {
+                blue += cubes.trim().split_once(" ").unwrap().0
+                    .parse::<i32>().expect("can parse blue cubes");
+            }
+        });
+
+    (red, green, blue)
+}
+
+fn game_power(game:&(i32, Vec<(i32, i32, i32)>)) -> i32 {
+    let mut red = 0;
+    let mut green = 0;
+    let mut blue = 0;
+
+    for cubeset in game.1.clone() {
+        red = max(cubeset.0, red);
+        green = max(cubeset.1, green);
+        blue = max(cubeset.2, blue);
+    }
+
+    red * green * blue
+}
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