Initial commit

20 files changed, 2179 insertions, 0 deletions

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..ea8c4bf
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+/target
diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000..625450a
--- /dev/null
+++ b/Cargo.lock
@@ -0,0 +1,54 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "aho-corasick"
+version = "1.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b2969dcb958b36655471fc61f7e416fa76033bdd4bfed0678d8fee1e2d07a1f0"
+dependencies = [
+ "memchr",
+]
+
+[[package]]
+name = "aoc2023_rust"
+version = "0.1.0"
+dependencies = [
+ "regex",
+]
+
+[[package]]
+name = "memchr"
+version = "2.6.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f665ee40bc4a3c5590afb1e9677db74a508659dfd71e126420da8274909a0167"
+
+[[package]]
+name = "regex"
+version = "1.10.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "380b951a9c5e80ddfd6136919eef32310721aa4aacd4889a8d39124b026ab343"
+dependencies = [
+ "aho-corasick",
+ "memchr",
+ "regex-automata",
+ "regex-syntax",
+]
+
+[[package]]
+name = "regex-automata"
+version = "0.4.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5f804c7828047e88b2d32e2d7fe5a105da8ee3264f01902f796c8e067dc2483f"
+dependencies = [
+ "aho-corasick",
+ "memchr",
+ "regex-syntax",
+]
+
+[[package]]
+name = "regex-syntax"
+version = "0.8.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c08c74e62047bb2de4ff487b251e4a92e24f48745648451635cec7d591162d9f"
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..0cd0fb9
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,9 @@
+[package]
+name = "aoc2023_rust"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+regex = "1.10.2"
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..eac8cdb
--- /dev/null
+++ b/README.md
@@ -0,0 +1 @@
+This is just my attempt to learn the Rust programming language.
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diff --git a/input/day2.txt b/input/day2.txt
new file mode 100644
index 0000000..db9f4bb
--- /dev/null
+++ b/input/day2.txt
@@ -0,0 +1,100 @@
+Game 1: 10 green, 9 blue, 1 red; 1 red, 7 green; 11 green, 6 blue; 8 blue, 12 green
+Game 2: 11 red, 7 green, 3 blue; 1 blue, 8 green, 5 red; 2 red, 12 green, 1 blue; 10 green, 5 blue, 7 red
+Game 3: 2 red, 7 green, 1 blue; 1 blue, 8 red; 7 green, 19 red, 5 blue; 1 blue, 10 green, 18 red; 10 red, 6 blue, 4 green
+Game 4: 2 blue, 5 green, 2 red; 7 red, 3 green; 3 blue, 2 red; 16 green, 2 blue
+Game 5: 1 blue, 9 red; 5 blue, 9 green, 6 red; 8 red, 10 blue, 3 green; 3 red, 13 green, 4 blue; 5 green, 9 red, 6 blue; 4 green, 8 red, 7 blue
+Game 6: 1 red, 2 green; 2 red, 1 blue; 5 red, 10 green, 2 blue; 1 blue, 2 green, 3 red; 1 red, 6 green
+Game 7: 9 blue, 14 green, 5 red; 10 green, 8 blue, 2 red; 20 green, 1 red; 4 blue, 17 green, 4 red
+Game 8: 16 blue, 16 green, 8 red; 16 blue, 6 red, 10 green; 13 blue, 8 green, 16 red; 10 red, 13 green, 13 blue
+Game 9: 8 blue, 10 green, 4 red; 18 green, 14 blue, 12 red; 4 green, 10 blue, 17 red; 16 red, 6 blue, 5 green; 11 red, 9 blue; 16 green, 13 red, 7 blue
+Game 10: 5 green, 2 red, 13 blue; 3 red, 2 green, 17 blue; 3 green, 12 blue, 15 red; 7 blue, 14 red; 3 red, 4 green, 17 blue
+Game 11: 8 green, 10 blue, 15 red; 11 blue, 4 green, 3 red; 10 blue, 4 green, 5 red; 7 blue, 1 green, 4 red; 2 red, 9 blue; 18 red, 8 green, 2 blue
+Game 12: 16 red, 10 green; 12 red, 8 blue, 3 green; 8 red, 10 green, 7 blue; 10 green, 12 red
+Game 13: 5 green, 2 red; 13 blue, 4 green, 4 red; 8 blue, 4 green
+Game 14: 9 green, 3 red, 1 blue; 1 blue, 3 red, 1 green; 6 green; 3 green, 5 red; 1 blue, 4 red
+Game 15: 13 red, 2 blue, 7 green; 6 green, 4 red, 7 blue; 8 blue, 11 red, 4 green; 1 green, 7 blue, 10 red; 3 blue, 9 green, 6 red; 6 green, 11 red, 1 blue
+Game 16: 1 red, 14 green; 4 green, 1 blue, 4 red; 3 red, 1 blue, 5 green; 5 red, 1 blue, 14 green; 1 blue, 1 red, 12 green; 6 red, 14 green, 1 blue
+Game 17: 14 green, 14 red; 19 green, 3 blue, 10 red; 4 green, 10 red, 1 blue
+Game 18: 9 green, 1 blue, 12 red; 1 green, 10 red; 1 blue, 3 red
+Game 19: 6 blue, 3 red, 3 green; 12 blue; 11 red, 14 blue, 3 green; 14 blue, 13 red, 1 green; 5 blue, 9 red
+Game 20: 10 blue, 11 green, 3 red; 2 red, 16 green; 6 blue, 16 green, 4 red; 14 green, 7 red, 1 blue; 5 red, 9 blue, 11 green
+Game 21: 1 red; 4 red; 2 red, 2 green, 1 blue
+Game 22: 11 green, 3 blue, 3 red; 12 blue, 6 green; 1 red, 5 blue, 1 green; 9 blue, 6 green; 10 green, 1 red, 8 blue
+Game 23: 13 blue, 3 green; 3 red, 5 green, 6 blue; 2 red, 11 green, 9 blue
+Game 24: 1 blue, 1 green; 1 blue; 1 red
+Game 25: 7 red, 1 green, 14 blue; 17 blue, 4 red, 6 green; 7 blue, 5 red; 2 red, 6 green, 20 blue
+Game 26: 10 green, 8 red, 11 blue; 13 green, 2 blue, 4 red; 1 blue, 6 green, 9 red
+Game 27: 9 green, 1 blue, 6 red; 7 red, 14 green; 13 green, 2 red; 2 red, 13 green; 2 green, 7 red
+Game 28: 10 red, 6 green; 7 green, 11 red, 1 blue; 8 red, 5 green; 10 green, 13 red; 17 red, 3 green
+Game 29: 4 blue, 3 red, 13 green; 9 green, 2 red, 1 blue; 11 green, 5 blue, 2 red; 1 blue, 7 green, 2 red; 4 blue, 1 red, 12 green
+Game 30: 6 blue, 1 green, 3 red; 1 green, 3 red, 1 blue; 6 green, 2 red, 2 blue
+Game 31: 11 red; 5 red, 2 green; 3 green, 6 red, 1 blue; 1 green, 18 red; 2 green, 14 red
+Game 32: 11 blue, 12 green, 11 red; 5 red, 14 blue, 5 green; 5 blue, 7 green, 18 red
+Game 33: 8 blue, 4 green, 11 red; 14 blue, 11 red, 3 green; 3 green, 1 blue; 17 red, 2 green, 9 blue; 7 green, 7 blue, 3 red; 2 green, 3 red, 7 blue
+Game 34: 1 blue, 17 green; 2 blue, 1 red, 10 green; 10 green, 1 red; 6 green, 1 red, 1 blue; 2 green, 2 blue, 1 red
+Game 35: 1 blue, 5 red, 5 green; 4 blue, 3 green, 8 red; 5 green, 14 blue; 5 green, 4 blue, 14 red
+Game 36: 13 green, 7 red, 2 blue; 2 red, 2 green; 1 red, 12 green; 7 green, 8 red
+Game 37: 11 red, 4 green, 1 blue; 12 red, 3 green, 5 blue; 1 blue, 12 red, 1 green; 9 red, 10 green; 7 red, 2 blue, 5 green; 7 green, 1 red, 4 blue
+Game 38: 14 red, 20 blue, 6 green; 14 red, 12 green, 13 blue; 10 green, 10 red, 9 blue; 9 green, 9 blue, 15 red
+Game 39: 4 blue; 8 green, 7 blue; 12 green, 2 blue, 5 red; 2 blue, 3 green, 3 red; 5 red, 1 green, 1 blue; 6 red, 1 blue
+Game 40: 7 green, 10 red, 3 blue; 2 blue, 1 red, 7 green; 2 red, 5 blue, 11 green; 4 blue, 12 red, 6 green; 13 green, 7 blue, 9 red; 14 blue, 7 green, 8 red
+Game 41: 14 red, 17 blue, 3 green; 18 blue, 4 green, 17 red; 2 green, 17 red, 8 blue; 7 green, 13 blue, 6 red
+Game 42: 1 blue, 16 green; 14 green; 17 blue, 4 green, 7 red; 6 red, 7 blue, 8 green
+Game 43: 8 red, 15 blue; 8 red, 1 green, 11 blue; 17 blue, 3 red
+Game 44: 10 red, 2 green, 11 blue; 8 green, 4 blue, 6 red; 6 green, 2 blue, 10 red; 1 blue, 12 red, 7 green
+Game 45: 1 blue, 4 red, 4 green; 2 red, 5 green; 3 green, 6 blue, 1 red; 12 blue, 1 red, 2 green
+Game 46: 2 blue; 1 red, 4 blue; 2 blue, 15 red; 3 blue, 4 green, 5 red; 4 green, 13 red; 1 blue, 3 green, 9 red
+Game 47: 13 blue, 2 green, 2 red; 2 green, 12 blue, 3 red; 2 green, 1 blue
+Game 48: 1 blue, 4 green, 11 red; 2 blue, 5 red, 8 green; 6 red
+Game 49: 1 red, 10 green; 3 green, 8 blue, 5 red; 7 red, 5 green, 7 blue
+Game 50: 12 blue, 5 green, 1 red; 7 blue, 2 red; 12 blue, 3 green; 16 blue; 1 blue, 3 green; 2 red, 14 blue, 11 green
+Game 51: 6 blue, 15 red, 1 green; 15 red, 2 blue, 1 green; 12 red, 2 green
+Game 52: 5 green, 11 blue, 5 red; 18 green, 4 red, 10 blue; 14 green, 8 blue, 8 red; 2 red, 9 green, 11 blue; 9 blue, 5 red, 10 green
+Game 53: 1 red, 1 green; 2 green, 1 red, 2 blue; 2 green, 1 blue
+Game 54: 4 blue, 3 red, 7 green; 4 blue, 13 green; 1 red, 2 green, 7 blue; 5 blue, 5 red, 17 green
+Game 55: 8 red, 11 green, 11 blue; 1 green, 15 blue, 6 red; 7 red, 8 blue, 11 green; 2 green, 1 red, 11 blue; 11 blue, 3 red; 3 red, 7 blue, 10 green
+Game 56: 13 blue, 3 green; 1 red, 1 green, 7 blue; 17 blue, 2 red; 3 blue, 4 green, 4 red
+Game 57: 9 green, 11 blue, 12 red; 13 red, 6 green, 1 blue; 4 blue, 1 green, 14 red; 11 red, 6 blue, 3 green
+Game 58: 7 green, 2 blue, 6 red; 1 red, 4 green; 1 blue, 8 green, 10 red
+Game 59: 3 green, 11 red, 3 blue; 1 blue, 5 red, 8 green; 10 green, 9 red; 5 green, 5 red, 1 blue; 4 green, 8 blue; 13 green
+Game 60: 2 blue, 11 green, 7 red; 5 red, 9 green, 2 blue; 3 blue, 2 red, 8 green; 6 red, 2 blue, 9 green; 5 red, 4 green, 2 blue; 6 red, 5 blue, 11 green
+Game 61: 7 blue, 5 green, 8 red; 12 blue, 1 red, 11 green; 15 blue, 14 red, 15 green; 14 red, 7 blue, 6 green; 9 blue; 3 green, 10 blue, 11 red
+Game 62: 8 red, 1 blue, 1 green; 2 red, 1 blue, 8 green; 11 blue, 15 red, 4 green; 1 red, 5 green, 2 blue; 15 green, 11 blue, 12 red
+Game 63: 6 red, 3 green, 7 blue; 8 red, 2 green; 4 green, 3 red, 4 blue; 6 blue, 3 red, 10 green; 4 blue, 6 red, 9 green; 8 blue, 10 green, 5 red
+Game 64: 1 blue, 9 red, 1 green; 17 red, 3 blue; 8 red, 2 green; 12 red, 8 blue
+Game 65: 15 blue, 2 red; 1 green, 14 blue; 10 green, 1 red, 10 blue; 10 green, 1 red, 12 blue; 13 blue, 1 green
+Game 66: 18 green, 3 red, 7 blue; 19 blue, 2 red; 5 red, 8 blue, 11 green; 1 red, 15 blue, 12 green; 13 blue, 6 green; 12 blue, 6 green
+Game 67: 1 blue, 2 green, 6 red; 7 red, 5 blue; 9 red, 13 blue, 5 green; 4 green, 4 blue, 5 red; 11 blue, 7 red; 3 blue, 9 red
+Game 68: 2 blue, 8 green, 16 red; 11 green, 13 blue; 6 red, 7 green, 1 blue; 4 green, 7 red, 8 blue
+Game 69: 7 green, 3 blue, 5 red; 11 green, 4 blue; 1 red, 15 green, 10 blue; 8 green, 12 blue, 4 red
+Game 70: 8 blue, 8 green; 4 blue, 1 red, 6 green; 1 green, 1 blue; 7 green, 4 blue
+Game 71: 7 red, 13 blue, 4 green; 2 blue, 11 red, 9 green; 14 blue, 6 green, 2 red; 10 red, 6 blue, 10 green
+Game 72: 1 blue, 9 green, 1 red; 4 blue, 6 green, 1 red; 1 red, 3 green, 3 blue; 10 green, 3 blue, 2 red; 3 blue, 1 red, 1 green; 3 green, 1 red, 3 blue
+Game 73: 4 green, 15 red, 6 blue; 1 green, 12 red; 2 green, 16 red; 1 green, 12 red, 2 blue; 6 red, 4 green, 2 blue; 19 red, 3 blue, 2 green
+Game 74: 14 green, 2 blue, 3 red; 13 green, 4 red; 3 green, 4 blue; 3 blue, 3 red; 2 red, 12 green; 3 blue, 3 green
+Game 75: 13 red, 10 blue, 1 green; 14 blue, 9 red, 2 green; 8 blue; 1 green, 13 red, 11 blue
+Game 76: 2 red, 8 blue, 12 green; 11 green, 2 red; 2 red, 2 blue, 10 green; 5 blue, 2 green; 3 red, 11 green, 8 blue
+Game 77: 4 blue, 8 red, 14 green; 15 green, 12 red, 5 blue; 8 red, 5 green, 1 blue
+Game 78: 8 red, 19 blue, 4 green; 18 blue, 2 red; 12 blue, 4 green, 8 red; 17 blue, 2 green, 9 red; 9 red, 10 blue, 1 green; 6 green, 9 blue, 1 red
+Game 79: 1 blue, 11 red, 2 green; 2 red, 2 green, 6 blue; 11 red, 2 blue, 2 green; 11 red, 2 green, 4 blue
+Game 80: 1 red, 9 blue; 1 red, 5 blue, 8 green; 5 green, 1 red, 4 blue; 2 green, 9 blue, 1 red; 7 blue, 1 green, 1 red
+Game 81: 1 green, 1 blue, 7 red; 3 blue, 7 green, 6 red; 5 green; 3 blue; 3 red, 4 blue, 1 green; 5 red, 9 green
+Game 82: 12 blue, 4 red, 4 green; 7 red, 4 blue; 3 green, 10 red, 3 blue; 6 blue, 13 red; 4 blue, 5 red, 1 green
+Game 83: 1 red, 1 green, 18 blue; 20 blue, 16 red, 1 green; 17 blue, 12 red; 1 green, 9 blue, 7 red
+Game 84: 6 blue, 7 green, 6 red; 6 red, 10 green, 1 blue; 5 red, 8 green; 13 green, 2 red, 7 blue
+Game 85: 1 blue, 7 red, 11 green; 1 red; 8 red, 10 green, 4 blue; 4 red, 11 green, 1 blue; 1 blue, 6 green
+Game 86: 9 green, 2 blue; 3 red, 1 green, 2 blue; 1 green, 5 blue, 9 red; 1 blue, 2 green; 9 red, 1 green, 4 blue
+Game 87: 15 red, 1 green, 16 blue; 1 green, 6 red, 17 blue; 7 red, 1 green, 3 blue; 8 red, 3 blue, 1 green; 15 red, 1 green
+Game 88: 7 green, 3 red, 10 blue; 8 blue, 8 red, 3 green; 18 green, 1 blue, 7 red; 8 red, 7 green, 10 blue
+Game 89: 5 red, 16 blue; 7 blue; 5 blue, 4 red; 3 blue, 4 green, 6 red; 1 red, 2 green, 16 blue
+Game 90: 19 blue, 5 green, 4 red; 2 green, 20 blue, 1 red; 18 blue
+Game 91: 10 red, 11 blue, 1 green; 18 red, 12 blue; 11 blue, 10 red
+Game 92: 3 green, 1 blue; 8 red, 5 green; 10 red, 3 green
+Game 93: 5 green, 1 blue, 5 red; 1 blue, 2 red, 7 green; 2 green, 6 red, 1 blue; 7 green, 1 blue, 2 red; 6 red, 1 green
+Game 94: 3 red, 6 blue, 2 green; 5 blue, 9 red; 11 blue, 5 red, 2 green; 2 green, 3 red, 14 blue; 5 red, 13 blue; 6 blue, 2 green, 8 red
+Game 95: 4 red, 3 green, 17 blue; 1 red, 5 green, 4 blue; 15 blue, 11 green; 5 green, 1 red, 4 blue; 11 blue, 2 green, 17 red
+Game 96: 3 red, 20 blue, 18 green; 1 red, 1 blue, 20 green; 18 blue, 4 green, 8 red
+Game 97: 11 green; 7 red, 8 green, 2 blue; 4 green, 17 red; 4 green, 7 red; 14 green, 18 red, 2 blue
+Game 98: 2 blue, 7 green, 1 red; 9 green, 10 red, 5 blue; 13 blue, 10 red, 8 green; 8 green, 11 red, 12 blue; 5 blue, 4 green, 2 red
+Game 99: 2 blue, 13 green; 1 blue; 1 red, 2 blue, 2 green; 1 red, 1 blue
+Game 100: 1 red, 14 green; 17 green, 12 red; 3 green, 7 red, 3 blue; 4 green, 13 red, 3 blue; 5 green, 11 red, 5 blue
diff --git a/input/day3.txt b/input/day3.txt
new file mode 100644
index 0000000..ec46c83
--- /dev/null
+++ b/input/day3.txt
@@ -0,0 +1,140 @@
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new file mode 100644
index 0000000..12e8bff
--- /dev/null
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+Card 198: 99 10 39  1 13 21 15 84 44 40 | 64 58 40 26  8 97 83 87 86 85 29 54 44 99  6 80 55 36 84 82 18 92 81 35 15
+Card 199: 16 74 44 41 37 70 15 20 36  9 | 63 89 93 59 81 76 85 14 92 30 67 71 69 49  7 39 99 97 62 18 55 83 11 79 36
+Card 200: 78 75 82 83 61 95  2 56 49 53 | 66 19 77 94 74 97 79 34 33 16 83 41 81 91 52 62 14 21 35  4 99 50 30 42 36
+Card 201: 97 48 74 15  5  4 40 64 95 33 | 83 54 73 81 37 53 85 20 68 51 82 41 27 42 60 63 50 58 98 35  9 23 18  2 32
+Card 202: 83 90  4 89 57 72 30 13  8 23 | 99 33 38 70 39 12 71 35 46 94 82 79 44 62 98 74 64 16 32 66 65 95 47 58 23
+Card 203: 38 61 14 84 65 96 90 69 53 11 | 24 50 66 56 26 25  3 60 95 19 10 21 12 87 92 37 99 76 71 57 17 55 30  6 44
diff --git a/input/day5.txt b/input/day5.txt
new file mode 100644
index 0000000..83a15b3
--- /dev/null
+++ b/input/day5.txt
@@ -0,0 +1,212 @@
+seeds: 630335678 71155519 260178142 125005421 1548082684 519777283 4104586697 30692976 1018893962 410959790 3570781652 45062110 74139777 106006724 3262608046 213460151 3022784256 121993130 2138898608 36769984
+
+seed-to-soil map:
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+
+soil-to-fertilizer map:
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+
+fertilizer-to-water map:
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+
+water-to-light map:
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+
+light-to-temperature map:
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+
+temperature-to-humidity map:
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+
+humidity-to-location map:
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+
diff --git a/src/day1pt1.rs b/src/day1pt1.rs
new file mode 100644
index 0000000..643fcd6
--- /dev/null
+++ b/src/day1pt1.rs
@@ -0,0 +1,21 @@
+use regex::Regex;
+
+pub fn main() {
+    let mut sum: u32 = 0;
+
+    let txt = std::fs::read_to_string("./input/day1.txt").unwrap();
+    let re = Regex::new(r"\d").unwrap();
+
+    for line in txt.lines() {
+        let capt = re.find_iter(line).collect::<Vec<_>>();
+        sum += capt.get(0).unwrap().as_str().parse::<u32>().unwrap() * 10
+            + capt
+                .get(capt.len() - 1)
+                .unwrap()
+                .as_str()
+                .parse::<u32>()
+                .unwrap();
+    }
+
+    println!("{}", sum);
+}
diff --git a/src/day1pt2.rs b/src/day1pt2.rs
new file mode 100644
index 0000000..99407dd
--- /dev/null
+++ b/src/day1pt2.rs
@@ -0,0 +1,51 @@
+use regex::Regex;
+
+fn parse(s: &str) -> u32 {
+    match s {
+        "zero" => 0,
+        "one" => 1,
+        "two" => 2,
+        "three" => 3,
+        "four" => 4,
+        "five" => 5,
+        "six" => 6,
+        "seven" => 7,
+        "eight" => 8,
+        "nine" => 9,
+        br => br.parse().unwrap(),
+    }
+}
+
+fn parse_bw(s: &str) -> u32 {
+    match s {
+        "orez" => 0,
+        "eno" => 1,
+        "owt" => 2,
+        "eerht" => 3,
+        "ruof" => 4,
+        "evif" => 5,
+        "xis" => 6,
+        "neves" => 7,
+        "thgie" => 8,
+        "enin" => 9,
+        br => br.parse().unwrap(),
+    }
+}
+
+pub fn main() {
+    let mut sum: u32 = 0;
+    let re = Regex::new(r"\d|zero|one|two|three|four|five|six|seven|eight|nine").unwrap();
+    let re_bw = Regex::new(r"\d|ozer|eno|owt|eerht|ruof|evif|xis|neves|thgie|enin").unwrap();
+
+    let txt = std::fs::read_to_string("./input/day1.txt").unwrap();
+    for line in txt.lines() {
+        let capt = re.find_iter(line).collect::<Vec<_>>();
+        let str_bw = String::from_iter(line.chars().rev());
+        let capt_bw = re_bw.find_iter(&str_bw).collect::<Vec<_>>();
+
+        let x =
+            parse(capt.get(0).unwrap().as_str()) * 10 + parse_bw(capt_bw.get(0).unwrap().as_str());
+        sum += x;
+    }
+    println!("{}", sum)
+}
diff --git a/src/day2pt1.rs b/src/day2pt1.rs
new file mode 100644
index 0000000..c1dad9c
--- /dev/null
+++ b/src/day2pt1.rs
@@ -0,0 +1,44 @@
+pub fn main() {
+    let _max_red: u32 = 12;
+    let _max_green: u32 = 13;
+    let _max_blue: u32 = 14;
+
+    let mut sum: u32 = 0;
+    let mut idx: u32 = 1;
+
+    let txt = std::fs::read_to_string("./input/day2.txt").unwrap();
+    for line in txt.lines() {
+        let pline = line.split(": ").last().unwrap();
+
+        // za svaku liniju
+        let mut ind: bool = true;
+
+        for i in pline.split("; ") {
+            for boje in i.split(", ") {
+                let broj = boje.split(" ").nth(0).unwrap().parse::<u32>().unwrap();
+                let boja = boje.split(" ").last().unwrap();
+
+                ind = match boja {
+                    "red" => _max_red >= broj,
+                    "green" => _max_green >= broj,
+                    "blue" => _max_blue >= broj,
+                    _ => ind,
+                };
+                if ind == false {
+                    break;
+                }
+            }
+            if ind == false {
+                break;
+            }
+        }
+
+        if ind {
+            sum += idx;
+        }
+
+        idx += 1;
+    }
+
+    println!("{}", sum);
+}
diff --git a/src/day2pt2.rs b/src/day2pt2.rs
new file mode 100644
index 0000000..86ba306
--- /dev/null
+++ b/src/day2pt2.rs
@@ -0,0 +1,33 @@
+use std::cmp;
+
+pub fn main() {
+    let mut sum: u32 = 0;
+
+    let txt = std::fs::read_to_string("./input/day2.txt").unwrap();
+    for line in txt.lines() {
+        let pline = line.split(": ").last().unwrap();
+
+        // za svaku liniju
+        let mut _max_red: u32 = 0;
+        let mut _max_green: u32 = 0;
+        let mut _max_blue: u32 = 0;
+
+        for i in pline.split("; ") {
+            for boje in i.split(", ") {
+                let broj = boje.split(" ").nth(0).unwrap().parse::<u32>().unwrap();
+                let boja = boje.split(" ").last().unwrap();
+
+                match boja {
+                    "red" => _max_red = cmp::max(_max_red, broj),
+                    "green" => _max_green = cmp::max(_max_green, broj),
+                    "blue" => _max_blue = cmp::max(_max_blue, broj),
+                    _ => println!("jbg"),
+                };
+            }
+        }
+
+        sum += _max_red * _max_green * _max_blue;
+    }
+
+    println!("{}", sum);
+}
diff --git a/src/day3pt1.rs b/src/day3pt1.rs
new file mode 100644
index 0000000..7fd9059
--- /dev/null
+++ b/src/day3pt1.rs
@@ -0,0 +1,64 @@
+use regex::Regex;
+
+struct Broj {
+    broj: u32,
+    x: i32,
+    y: i32,
+    len: i32,
+}
+
+struct Simbol {
+    x: i32,
+    y: i32,
+}
+
+pub fn main() {
+    let txt = std::fs::read_to_string("./input/day3.txt").unwrap();
+    let brojevi = Regex::new(r"\d+").unwrap();
+    let simboli = Regex::new(r"[^0-9.]+").unwrap();
+
+    let mut vbr: Vec<Broj> = vec![];
+    let mut vsim: Vec<Simbol> = vec![];
+    let mut w = 0;
+    let mut h = 0;
+
+    for line in txt.lines() {
+        if w == 0 {
+            w = line.len();
+        }
+
+        let m = brojevi.captures_iter(line).collect::<Vec<_>>();
+        for i in m {
+            let broji = i.get(0).unwrap().as_str().parse::<u32>().unwrap();
+            let xi = i32::try_from(i.get(0).unwrap().start()).unwrap();
+            let leni = i32::try_from(i.get(0).unwrap().as_str().len()).unwrap();
+            vbr.push(Broj {
+                broj: broji,
+                x: xi,
+                y: h,
+                len: leni,
+            });
+        }
+
+        let s = simboli.captures_iter(line).collect::<Vec<_>>();
+        for i in s {
+            let xi = i32::try_from(i.get(0).unwrap().start()).unwrap();
+            vsim.push(Simbol { x: xi, y: h });
+        }
+
+        h += 1;
+    }
+
+    let mut sum: u32 = 0;
+
+    for br in vbr.as_slice() {
+        for sim in vsim.as_slice() {
+            if i32::abs(sim.y - br.y) < 2 && br.x - 1 <= sim.x && sim.x <= br.x + br.len {
+                sum += br.broj;
+                break;
+            }
+        }
+    }
+
+    println!("{}", sum);
+}
diff --git a/src/day3pt2.rs b/src/day3pt2.rs
new file mode 100644
index 0000000..61d0fd1
--- /dev/null
+++ b/src/day3pt2.rs
@@ -0,0 +1,69 @@
+use regex::Regex;
+
+struct Broj {
+    broj: u32,
+    x: i32,
+    y: i32,
+    len: i32,
+}
+
+struct Simbol {
+    x: i32,
+    y: i32,
+}
+
+pub fn main() {
+    let txt = std::fs::read_to_string("./input/day3.txt").unwrap();
+    let brojevi = Regex::new(r"\d+").unwrap();
+    let simboli = Regex::new(r"[^0-9.]+").unwrap();
+
+    let mut vbr: Vec<Broj> = vec![];
+    let mut vsim: Vec<Simbol> = vec![];
+    let mut w = 0;
+    let mut h = 0;
+
+    for line in txt.lines() {
+        if w == 0 {
+            w = line.len();
+        }
+
+        let m = brojevi.captures_iter(line).collect::<Vec<_>>();
+        for i in m {
+            let broji = i.get(0).unwrap().as_str().parse::<u32>().unwrap();
+            let xi = i32::try_from(i.get(0).unwrap().start()).unwrap();
+            let leni = i32::try_from(i.get(0).unwrap().as_str().len()).unwrap();
+            vbr.push(Broj {
+                broj: broji,
+                x: xi,
+                y: h,
+                len: leni,
+            });
+        }
+
+        let s = simboli.captures_iter(line).collect::<Vec<_>>();
+        for i in s {
+            let xi = i32::try_from(i.get(0).unwrap().start()).unwrap();
+            vsim.push(Simbol { x: xi, y: h });
+        }
+
+        h += 1;
+    }
+
+    let mut sum: u32 = 0;
+
+    for sim in vsim.as_slice() {
+        let mut cnt: u32 = 0;
+        let mut ratio: u32 = 1;
+        for br in vbr.as_slice() {
+            if i32::abs(sim.y - br.y) < 2 && br.x - 1 <= sim.x && sim.x <= br.x + br.len {
+                cnt += 1;
+                ratio *= br.broj;
+            }
+        }
+        if cnt == 2 {
+            sum += ratio;
+        }
+    }
+
+    println!("{}", sum);
+}
diff --git a/src/day4pt1.rs b/src/day4pt1.rs
new file mode 100644
index 0000000..5a622a8
--- /dev/null
+++ b/src/day4pt1.rs
@@ -0,0 +1,45 @@
+pub fn main() {
+    let txt = std::fs::read_to_string("./input/day4.txt").unwrap();
+    let mut sum: u32 = 0;
+    for line in txt.lines() {
+        let mut cnt: u32 = 0;
+
+        let mut br1 = vec![];
+        let mut br2 = vec![];
+
+        let sec_pt = line
+            .split(": ")
+            .collect::<Vec<&str>>()
+            .get(1)
+            .unwrap()
+            .split(" | ")
+            .collect::<Vec<&str>>();
+        for i in sec_pt.get(0).unwrap().split(r" ") {
+            if i == "" {
+                continue;
+            }
+            br1.push(i.parse::<u32>().unwrap());
+        }
+
+        for i in sec_pt.get(1).unwrap().split(r" ") {
+            if i == "" {
+                continue;
+            }
+            br2.push(i.parse::<u32>().unwrap());
+        }
+
+        for i in &br1 {
+            for j in &br2 {
+                if i == j {
+                    cnt += 1;
+                }
+            }
+        }
+
+        if cnt > 0 {
+            sum += 2u32.pow(cnt - 1);
+        }
+    }
+
+    println!("{}", sum);
+}
diff --git a/src/day4pt2.rs b/src/day4pt2.rs
new file mode 100644
index 0000000..765e992
--- /dev/null
+++ b/src/day4pt2.rs
@@ -0,0 +1,49 @@
+pub fn main() {
+    let txt = std::fs::read_to_string("./input/day4.txt").unwrap();
+    let mut sum: u32 = 0;
+    let mut a = vec![1; 256];
+
+    for (idx, line) in txt.lines().enumerate() {
+        let mut cnt: u32 = 0;
+
+        let mut br1 = vec![];
+        let mut br2 = vec![];
+
+        let sec_pt = line
+            .split(": ")
+            .collect::<Vec<&str>>()
+            .get(1)
+            .unwrap()
+            .split(" | ")
+            .collect::<Vec<&str>>();
+        for i in sec_pt.get(0).unwrap().split(r" ") {
+            if i == "" {
+                continue;
+            }
+            br1.push(i.parse::<u32>().unwrap());
+        }
+
+        for i in sec_pt.get(1).unwrap().split(r" ") {
+            if i == "" {
+                continue;
+            }
+            br2.push(i.parse::<u32>().unwrap());
+        }
+
+        for i in &br1 {
+            for j in &br2 {
+                if i == j {
+                    cnt += 1;
+                }
+            }
+        }
+
+        for i in 1..cnt + 1 {
+            a[idx + i as usize] += a[idx];
+        }
+
+        sum += a[idx];
+    }
+
+    println!("{}", sum);
+}
diff --git a/src/day5pt1.rs b/src/day5pt1.rs
new file mode 100644
index 0000000..a50a66a
--- /dev/null
+++ b/src/day5pt1.rs
@@ -0,0 +1,39 @@
+pub fn main() {
+    let txt = std::fs::read_to_string("./input/day5.txt").unwrap();
+
+    let mut seeds: Vec<i64> = vec![];
+    let mut rules: Vec<(i64, i64, i64)> = vec![];
+
+    for (i, line) in txt.lines().enumerate() {
+        if line != "" {
+            // dodaj u vec
+            if i != 0 && line.chars().nth(line.len() - 1).unwrap() != ':' {
+                let br: Vec<i64> = line.split(" ").map(|s| s.parse().unwrap()).collect();
+                rules.push((br[0], br[1], br[2]));
+            }
+        } else {
+            // obradi
+            for i in 0..seeds.len() {
+                for rule in &rules {
+                    if rule.1 <= seeds[i] && seeds[i] < rule.1 + rule.2 {
+                        seeds[i] += rule.0 - rule.1;
+                        break;
+                    }
+                }
+            }
+            rules.clear();
+        }
+
+        if seeds.is_empty() && line != "" {
+            seeds = line
+                .split(": ")
+                .collect::<Vec<_>>()
+                .get(1)
+                .unwrap()
+                .split(" ")
+                .map(|s| s.parse().unwrap())
+                .collect();
+        }
+    }
+    println!("{}", seeds.iter().min().unwrap());
+}
diff --git a/src/day5pt2.rs b/src/day5pt2.rs
new file mode 100644
index 0000000..8f95d3d
--- /dev/null
+++ b/src/day5pt2.rs
@@ -0,0 +1,39 @@
+pub fn main() {
+    let txt = std::fs::read_to_string("./input/day5.txt").unwrap();
+
+    let mut seeds: Vec<i64> = vec![];
+    let mut rules: Vec<(i64, i64, i64)> = vec![];
+
+    for (i, line) in txt.lines().enumerate() {
+        if line != "" {
+            // dodaj u vec
+            if i != 0 && line.chars().nth(line.len() - 1).unwrap() != ':' {
+                let br: Vec<i64> = line.split(" ").map(|s| s.parse().unwrap()).collect();
+                rules.push((br[0], br[1], br[2]));
+            }
+        } else {
+            // obradi
+            for i in 0..seeds.len() {
+                for rule in &rules {
+                    if rule.1 <= seeds[i] && seeds[i] < rule.1 + rule.2 {
+                        seeds[i] += rule.0 - rule.1;
+                        break;
+                    }
+                }
+            }
+            rules.clear();
+        }
+
+        if seeds.is_empty() && line != "" {
+            seeds = line
+                .split(": ")
+                .collect::<Vec<_>>()
+                .get(1)
+                .unwrap()
+                .split(" ")
+                .map(|s| s.parse().unwrap())
+                .collect();
+        }
+    }
+    println!("{}", 0);
+}
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..b3ad2f6
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,5 @@
+mod day5pt2;
+
+fn main() {
+    day5pt2::main();
+}