diff --git a/day1/TODO.md b/day1/TODO.md
new file mode 100644
index 0000000..a14d6aa
--- /dev/null
+++ b/day1/TODO.md
@@ -0,0 +1,2 @@
+# Rework a more efficient one usinc `memchr2()`
+We can `memchr2('\n','\n', mapped_file_memory)` on a `mmap()`'d input file to find the grouping seperators, and process each group in parallel
diff --git a/day14/Cargo.lock b/day14/Cargo.lock
index 906d2fc..449976e 100644
--- a/day14/Cargo.lock
+++ b/day14/Cargo.lock
@@ -62,6 +62,7 @@ name = "day14"
 version = "0.1.0"
 dependencies = [
  "color-eyre",
+ "jemallocator",
  "linebuffer",
 ]
 
@@ -75,6 +76,12 @@ dependencies = [
  "once_cell",
 ]
 
+[[package]]
+name = "fs_extra"
+version = "1.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2022715d62ab30faffd124d40b76f4134a550a87792276512b18d63272333394"
+
 [[package]]
 name = "gimli"
 version = "0.27.0"
@@ -87,6 +94,27 @@ version = "0.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ce23b50ad8242c51a442f3ff322d56b02f08852c77e4c0b4d3fd684abc89c683"
 
+[[package]]
+name = "jemalloc-sys"
+version = "0.5.2+5.3.0-patched"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "134163979b6eed9564c98637b710b40979939ba351f59952708234ea11b5f3f8"
+dependencies = [
+ "cc",
+ "fs_extra",
+ "libc",
+]
+
+[[package]]
+name = "jemallocator"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "16c2514137880c52b0b4822b563fadd38257c1f380858addb74a400889696ea6"
+dependencies = [
+ "jemalloc-sys",
+ "libc",
+]
+
 [[package]]
 name = "libc"
 version = "0.2.138"
diff --git a/day14/Cargo.toml b/day14/Cargo.toml
index 4c81545..9472b52 100644
--- a/day14/Cargo.toml
+++ b/day14/Cargo.toml
@@ -16,6 +16,12 @@ inherits="release"
 #incremental=true
 strip=false
 
+[features]
+default= [ "jemallocator" ]
+
+status = ["jemallocator/profiling"]
+
 [dependencies]
 color-eyre = { version = "0.6.2", default-features = false }
+jemallocator = { version = "0.5.0", optional = true }
 linebuffer = { path = "/home/avril/work/linebuffer" }
diff --git a/day14/src/main.rs b/day14/src/main.rs
index ee6e8c8..a1ebe54 100644
--- a/day14/src/main.rs
+++ b/day14/src/main.rs
@@ -24,6 +24,14 @@ use linebuffer::{
     buf::forward,
 };
 
+#[cfg(feature="jemallocator")] 
+const _:() = {
+    use jemallocator::Jemalloc;
+
+    #[global_allocator]
+    static GLOBAL: Jemalloc = Jemalloc;
+};
+
 mod ext {
     use super::iter::{
 	self,
@@ -239,7 +247,7 @@ fn main() -> eyre::Result<()> {
 	.wrap_err("Failed to parse input")?;
 
     //TODO: Deconstruct each `Line` into the horizontal and vertical movements
-    //eprintln!("{input:#?}");
+    eprintln!("{input:#?}");
     println!("{}", input.zipped_len());
 
     //TODO: Draw lines into grid before starting simulation of sand from `ORIGIN_POINT`.