diff --git a/Cargo.lock b/Cargo.lock
index fdf73ca..8437ddf 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -7,6 +7,7 @@ name = "advent-of-code"
 version = "0.1.0"
 dependencies = [
  "advent-of-code-macros",
+ "num",
  "regex",
 ]
 
@@ -28,12 +29,91 @@ dependencies = [
  "memchr",
 ]
 
+[[package]]
+name = "autocfg"
+version = "1.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ace50bade8e6234aa140d9a2f552bbee1db4d353f69b8217bc503490fc1a9f26"
+
 [[package]]
 name = "memchr"
 version = "2.7.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "78ca9ab1a0babb1e7d5695e3530886289c18cf2f87ec19a575a0abdce112e3a3"
 
+[[package]]
+name = "num"
+version = "0.4.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "35bd024e8b2ff75562e5f34e7f4905839deb4b22955ef5e73d2fea1b9813cb23"
+dependencies = [
+ "num-bigint",
+ "num-complex",
+ "num-integer",
+ "num-iter",
+ "num-rational",
+ "num-traits",
+]
+
+[[package]]
+name = "num-bigint"
+version = "0.4.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a5e44f723f1133c9deac646763579fdb3ac745e418f2a7af9cd0c431da1f20b9"
+dependencies = [
+ "num-integer",
+ "num-traits",
+]
+
+[[package]]
+name = "num-complex"
+version = "0.4.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "73f88a1307638156682bada9d7604135552957b7818057dcef22705b4d509495"
+dependencies = [
+ "num-traits",
+]
+
+[[package]]
+name = "num-integer"
+version = "0.1.46"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7969661fd2958a5cb096e56c8e1ad0444ac2bbcd0061bd28660485a44879858f"
+dependencies = [
+ "num-traits",
+]
+
+[[package]]
+name = "num-iter"
+version = "0.1.45"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1429034a0490724d0075ebb2bc9e875d6503c3cf69e235a8941aa757d83ef5bf"
+dependencies = [
+ "autocfg",
+ "num-integer",
+ "num-traits",
+]
+
+[[package]]
+name = "num-rational"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f83d14da390562dca69fc84082e73e548e1ad308d24accdedd2720017cb37824"
+dependencies = [
+ "num-bigint",
+ "num-integer",
+ "num-traits",
+]
+
+[[package]]
+name = "num-traits"
+version = "0.2.19"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "071dfc062690e90b734c0b2273ce72ad0ffa95f0c74596bc250dcfd960262841"
+dependencies = [
+ "autocfg",
+]
+
 [[package]]
 name = "proc-macro2"
 version = "1.0.92"
diff --git a/Cargo.toml b/Cargo.toml
index 24c6161..d54fbbf 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -309,6 +309,7 @@ path = "src/bin/2024/25.rs"
 name = "advent_of_code"
 
 [dependencies]
+num="0.4.*"
 
 [dependencies.advent-of-code-macros]
 path = "macros"
diff --git a/src/bin/2024/02.rs b/src/bin/2024/02.rs
index aa2e7d0..7b9b65b 100644
--- a/src/bin/2024/02.rs
+++ b/src/bin/2024/02.rs
@@ -1,6 +1,6 @@
 use std::fmt::Display;
 
-use advent_of_code::strings::parsenumber;
+use advent_of_code::strings::{convert_to_array, parsenumber};
 #[allow(unused_imports)]
 use advent_of_code_macros::{include_data, include_example};
 
@@ -101,7 +101,7 @@ fn safe(record: Vec<u32>) -> bool {
 }
 
 fn main() {
-    let numbers = DATA.split('\n').map(get_numbers);
+    let numbers = convert_to_array(DATA, get_numbers);
     let mut safe_reports = 0;
     let mut safe_with_dampener = 0;
     for report in numbers {
diff --git a/src/lib.rs b/src/lib.rs
index e8dfd78..91b8396 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1 +1,78 @@
+use num::*;
+
 pub mod strings;
+
+pub fn matrix(zero: bool, diag: bool, non_diag: bool) -> Vec<(i32, i32)> {
+    const MIN: i32 = -1;
+    const MAX: i32 = 1;
+    let mut d = Vec::new();
+    for i in MIN..=MAX {
+        for j in MIN..=MAX {
+            let ia = i.abs();
+            let ja = j.abs();
+            if zero && i == 0 && j == 0 {
+                d.push((i, j));
+            }
+            if diag && ia == 1 && ja == 1 {
+                d.push((i, j));
+            }
+            if non_diag && ia != ja && ia + ja == 1 {
+                d.push((i, j));
+            }
+        }
+    }
+    d
+}
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord)]
+struct Kartesian<T>
+where
+    T: Integer,
+{
+    x: T,
+    y: T,
+}
+#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord)]
+struct Euclidian<T>
+where
+    T: Integer,
+{
+    x: T,
+    y: T,
+    z: T,
+}
+
+type Table = Vec<Vec<char>>;
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord)]
+enum KartesianDirection {
+    TopLeft,
+    Top,
+    TopRight,
+    Left,
+    None,
+    Right,
+    BottomLeft,
+    Bottom,
+    BottomRight,
+}
+
+impl KartesianDirection {
+    fn vector<T: Signed + Integer + Zero + From<i8>>(self) -> Kartesian<T> {
+        const BELOW: i8 = -1;
+        const ON: i8 = 0;
+        const UPPER: i8 = 1;
+        Kartesian::<T> {
+            x: match self {
+                Self::TopLeft | Self::Left | Self::BottomLeft => BELOW.into(),
+                Self::Top | Self::None | Self::Bottom => ON.into(),
+                Self::TopRight | Self::Right | Self::BottomRight => UPPER.into(),
+            },
+            y: match self {
+                Self::TopLeft | Self::Top | Self::TopRight => BELOW.into(),
+                Self::Left | Self::None | Self::Right => ON.into(),
+                Self::BottomLeft | Self::Bottom | Self::BottomRight => UPPER.into(),
+            },
+        }
+    }
+}
diff --git a/src/strings.rs b/src/strings.rs
index 7feb745..05f4a5a 100644
--- a/src/strings.rs
+++ b/src/strings.rs
@@ -156,3 +156,12 @@ pub fn get_string_numbers(input: &str) -> Vec<u32> {
     }
     output
 }
+
+#[inline]
+pub fn line_to_char(line: &str) -> Vec<char> {
+    Vec::from_iter(line.chars())
+}
+
+pub fn convert_to_array<T, F: FnMut(&str) -> T>(input: &str, func: F) -> Vec<T> {
+    input.split('\n').map(func).collect()
+}