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
index e2cfc24..468c3c6 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -18,111 +18,24 @@ version = "0.1.0"
 [[package]]
 name = "day01"
 version = "0.1.0"
-
-[[package]]
-name = "day02"
-version = "0.1.0"
-
-[[package]]
-name = "day03"
-version = "0.1.0"
-
-[[package]]
-name = "day04"
-version = "0.1.0"
-dependencies = [
- "once_cell",
- "regex",
-]
-
-[[package]]
-name = "day05"
-version = "0.1.0"
-dependencies = [
- "once_cell",
- "regex",
-]
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-version = "0.1.0"
-
-[[package]]
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-version = "0.1.0"
-dependencies = [
- "once_cell",
- "regex",
- "thiserror",
-]
-
-[[package]]
-name = "day08"
-version = "0.1.0"
-
-[[package]]
-name = "day09"
-version = "0.1.0"
 dependencies = [
  "aoc_libs",
  "once_cell",
  "regex",
 ]
 
-[[package]]
-name = "day10"
-version = "0.1.0"
-dependencies = [
- "aoc_libs",
- "nom",
-]
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 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f665ee40bc4a3c5590afb1e9677db74a508659dfd71e126420da8274909a0167"
 
-[[package]]
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-checksum = "68354c5c6bd36d73ff3feceb05efa59b6acb7626617f4962be322a825e61f79a"
-
-[[package]]
-name = "nom"
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-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d273983c5a657a70a3e8f2a01329822f3b8c8172b73826411a55751e404a0a4a"
-dependencies = [
- "memchr",
- "minimal-lexical",
-]
-
 [[package]]
 name = "once_cell"
 version = "1.18.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "dd8b5dd2ae5ed71462c540258bedcb51965123ad7e7ccf4b9a8cafaa4a63576d"
 
-[[package]]
-name = "proc-macro2"
-version = "1.0.69"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "134c189feb4956b20f6f547d2cf727d4c0fe06722b20a0eec87ed445a97f92da"
-dependencies = [
- "unicode-ident",
-]
-
-[[package]]
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-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5267fca4496028628a95160fc423a33e8b2e6af8a5302579e322e4b520293cae"
-dependencies = [
- "proc-macro2",
-]
-
 [[package]]
 name = "regex"
 version = "1.10.2"
@@ -152,46 +65,9 @@ version = "0.8.2"
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 checksum = "c08c74e62047bb2de4ff487b251e4a92e24f48745648451635cec7d591162d9f"
 
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-dependencies = [
- "proc-macro2",
- "quote",
- "unicode-ident",
-]
-
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 name = "template"
 version = "0.1.0"
 dependencies = [
  "aoc_libs",
 ]
-
-[[package]]
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-source = "registry+https://github.com/rust-lang/crates.io-index"
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diff --git a/days/day01/Cargo.toml b/days/day01/Cargo.toml
new file mode 100644
index 0000000..cc83ea4
--- /dev/null
+++ b/days/day01/Cargo.toml
@@ -0,0 +1,11 @@
+[package]
+name = "day01"
+authors.workspace = true
+description.workspace = true
+version.workspace = true
+edition.workspace = true
+
+[dependencies]
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+regex.workspace = true
+once_cell.workspace = true
diff --git a/days/day01/src/input.txt b/days/day01/src/input.txt
new file mode 100644
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diff --git a/days/day01/src/main.rs b/days/day01/src/main.rs
new file mode 100644
index 0000000..a6abd96
--- /dev/null
+++ b/days/day01/src/main.rs
@@ -0,0 +1,15 @@
+mod part1;
+mod part2;
+mod parse;
+
+fn main() {
+    let input = include_str!("./input.txt");
+    let structured_input = parse::parse(input);
+
+    println!("Part One");
+    println!("Result: {}", part1::part1(&structured_input));
+
+    let structured_input = parse::parse_english(input);
+    println!("Part Two");
+    println!("Result: {}", part2::part2(&structured_input));
+}
diff --git a/days/day01/src/parse.rs b/days/day01/src/parse.rs
new file mode 100644
index 0000000..a91e4b5
--- /dev/null
+++ b/days/day01/src/parse.rs
@@ -0,0 +1,77 @@
+static REPLACEMENT_STRINGS: [(&str, &str); 10] = [
+    ("zero", "zero0zero"),
+    ("one", "one1one"),
+    ("two", "two2two"),
+    ("three", "three3three"),
+    ("four", "four4four"),
+    ("five", "five5five"),
+    ("six", "six6six"),
+    ("seven", "seven7seven"),
+    ("eight", "eight8eight"),
+    ("nine", "nine9nine"),
+];
+
+pub fn parse_english(input: &str) -> Vec<Vec<char>> {
+    input
+        .to_string()
+        .lines()
+        .map(|l| {
+            let mut ret = l.to_string();
+            for (string, replacement) in REPLACEMENT_STRINGS.iter() {
+                ret = ret.replace(string, replacement)
+            }
+            ret
+        })
+        .map(|l| l.chars().filter(|c| c.is_ascii_digit()).collect())
+        .collect()
+}
+
+pub fn parse(input: &str) -> Vec<Vec<char>> {
+    input
+        .lines()
+        .map(|l| l.chars().filter(|c| c.is_ascii_digit()).collect())
+        .collect()
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_parse() {
+        let input = concat!("1abc2\n", "pqr3stu8vwx\n", "a1b2c3d4e5f\n", "treb7uchet\n",);
+        assert_eq!(
+            parse(input),
+            vec![
+                vec!['1', '2',],
+                vec!['3', '8',],
+                vec!['1', '2', '3', '4', '5'],
+                vec!['7']
+            ]
+        );
+    }
+    #[test]
+    fn test_english() {
+        let input = concat!(
+            "two1nine\n",
+            "eightwothree\n",
+            "abcone2threexyz\n",
+            "xtwone3four\n",
+            "4nineeightseven2\n",
+            "zoneight234\n",
+            "7pqrstsixteen\n",
+        );
+        assert_eq!(
+            parse_english(input),
+            vec![
+                vec!['2', '1', '9',],
+                vec!['8', '2', '3',],
+                vec!['1', '2', '3',],
+                vec!['2', '1', '3', '4'],
+                vec!['4', '9', '8', '7', '2'],
+                vec!['1', '8', '2', '3', '4'],
+                vec!['7', '6'],
+            ]
+        );
+    }
+}
diff --git a/days/day01/src/part1.rs b/days/day01/src/part1.rs
new file mode 100644
index 0000000..4ff4b81
--- /dev/null
+++ b/days/day01/src/part1.rs
@@ -0,0 +1,27 @@
+pub fn part1(input: &[Vec<char>]) -> usize {
+    input
+        .iter()
+        .map(|s| {
+            let mut string = String::new();
+            string.push_str(&s.first().unwrap().to_string());
+            string.push_str(&s.last().unwrap().to_string());
+            string.parse::<usize>().unwrap()
+        })
+        .sum()
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_part1() {
+        let input = vec![
+            vec!['1', '2'],
+            vec!['3', '8'],
+            vec!['1', '2', '3', '4', '5'],
+            vec!['7'],
+        ];
+        assert_eq!(part1(&input), 142);
+    }
+}
diff --git a/days/day01/src/part2.rs b/days/day01/src/part2.rs
new file mode 100644
index 0000000..5d8ad68
--- /dev/null
+++ b/days/day01/src/part2.rs
@@ -0,0 +1,30 @@
+pub fn part2(input: &[Vec<char>]) -> usize {
+    input
+        .iter()
+        .map(|s| {
+            let mut string = String::new();
+            string.push_str(&s.first().unwrap().to_string());
+            string.push_str(&s.last().unwrap().to_string());
+            string.parse::<usize>().unwrap()
+        })
+        .sum()
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_part2() {
+        let input = vec![
+            vec!['2', '1', '9'],
+            vec!['8', '2', '3'],
+            vec!['1', '2', '3'],
+            vec!['2', '1', '3', '4'],
+            vec!['4', '9', '8', '7', '2'],
+            vec!['1', '8', '2', '3', '4'],
+            vec!['7', '6'],
+        ];
+        assert_eq!(part2(&input), 281);
+    }
+}
diff --git a/template/src/part1.rs b/template/src/part1.rs
index dd46fd2..3ab311b 100644
--- a/template/src/part1.rs
+++ b/template/src/part1.rs
@@ -1,4 +1,5 @@
-use crate::parse::*
+use crate::parse::*;
+
 pub fn part1() -> usize {
     unimplemented!()
 }
diff --git a/template/src/part2.rs b/template/src/part2.rs
index 6d129e2..419e697 100644
--- a/template/src/part2.rs
+++ b/template/src/part2.rs
@@ -1,4 +1,4 @@
-use crate::parse::*
+use crate::parse::*;
 
 pub fn part2() -> usize {
     unimplemented!()