diff --git a/projecteuler/090/Cargo.lock b/projecteuler/090/Cargo.lock
new file mode 100644
index 0000000..88ffcd8
--- /dev/null
+++ b/projecteuler/090/Cargo.lock
@@ -0,0 +1,7 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "main"
+version = "0.1.0"
diff --git a/projecteuler/090/Cargo.toml b/projecteuler/090/Cargo.toml
new file mode 100644
index 0000000..fca4e93
--- /dev/null
+++ b/projecteuler/090/Cargo.toml
@@ -0,0 +1,8 @@
+[package]
+name = "main"
+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/projecteuler/090/src/main.rs b/projecteuler/090/src/main.rs
new file mode 100644
index 0000000..1d837a3
--- /dev/null
+++ b/projecteuler/090/src/main.rs
@@ -0,0 +1,10 @@
+use std::time::Instant;
+
+fn main() {
+    println!("Hello, this is Patrick!");
+    let now = Instant::now();
+    // We can't just loop through all possibilities because that would something in the order of
+    // (10*9*8*7*6*5)^2, which is a really big scary number
+
+    println!("Time passed: {:?}", Instant::now() - now);
+}