diff --git a/inputs/day_02-example.txt b/inputs/day_02-example.txt
new file mode 100644
index 0000000..a3f22ef
--- /dev/null
+++ b/inputs/day_02-example.txt
@@ -0,0 +1 @@
+11-22,95-115,998-1012,1188511880-1188511890,222220-222224,1698522-1698528,446443-446449,38593856-38593862,565653-565659,824824821-824824827,2121212118-2121212124
diff --git a/inputs/day_02.txt b/inputs/day_02.txt
new file mode 100644
index 0000000..7090db6
--- /dev/null
+++ b/inputs/day_02.txt
@@ -0,0 +1 @@
+975119-1004307,35171358-35313940,6258659887-6258804661,737649-837633,85745820-85956280,9627354-9679470,2327309144-2327509647,301168-351545,537261-631588,364281214-364453549,9563727253-9563879587,3680-9127,388369417-388406569,6677501-6752949,650804-678722,3314531-3365076,1052-2547,24134-68316,8888820274-8888998305,82614-107458,456819-529037,358216-389777,24222539-24266446,874565-916752,3886244-3960191,25-110,9696951376-9696996784,171-671,5656545867-5656605587,75795017-75865731,1-16,181025-232078
diff --git a/src/main.rs b/src/main.rs
index 601704e..998d950 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -48,6 +48,7 @@ fn main() -> Result<()> {
 
     let (solver, input_build_time) = match args.day {
         1 => solver!(Day01, raw_input),
+        2 => solver!(Day02, raw_input),
         _ => bail!("invalid day: `{}`", args.day),
     };
     println!("Parsed input int {input_build_time:#?}");
diff --git a/src/solutions/day_02.rs b/src/solutions/day_02.rs
new file mode 100644
index 0000000..0bb7a38
--- /dev/null
+++ b/src/solutions/day_02.rs
@@ -0,0 +1,53 @@
+use crate::solution::Solution;
+
+#[derive(Clone, Copy, Debug)]
+struct IdRange(u64, u64);
+
+impl IdRange {
+    fn parse(range: &str) -> Self {
+        let (start, end) = range.split_once('-').unwrap();
+        Self(start.parse().unwrap(), end.parse().unwrap())
+    }
+
+    fn ids(&self) -> impl Iterator<Item = Id> {
+        (self.0..=self.1).map(Id)
+    }
+}
+
+#[derive(Clone, Copy, Debug)]
+struct Id(u64);
+
+impl Id {
+    fn contains_repeat(&self) -> bool {
+        let s = self.0.to_string();
+
+        if !s.len().is_multiple_of(2) {
+            return false;
+        }
+
+        let (left, right) = s.split_at(s.len() / 2);
+
+        left == right
+    }
+}
+
+#[derive(Debug)]
+pub struct Day02 {
+    ranges: Vec<IdRange>,
+}
+
+impl Solution for Day02 {
+    fn with_input(input: String) -> Self {
+        let ranges = input.trim().split(',').map(IdRange::parse).collect();
+        Self { ranges }
+    }
+
+    fn part1(&self) -> String {
+        self.ranges
+            .iter()
+            .flat_map(IdRange::ids)
+            .filter_map(|id| id.contains_repeat().then_some(id.0))
+            .sum::<u64>()
+            .to_string()
+    }
+}
diff --git a/src/solutions/mod.rs b/src/solutions/mod.rs
index a4b0340..d66dbfd 100644
--- a/src/solutions/mod.rs
+++ b/src/solutions/mod.rs
@@ -1,3 +1,5 @@
 mod day_01;
+mod day_02;
 
 pub use day_01::Day01;
+pub use day_02::Day02;