diff --git a/res/05/example b/res/05/example
new file mode 100644
index 0000000..9d146d6
--- /dev/null
+++ b/res/05/example
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diff --git a/res/05/input b/res/05/input
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--- /dev/null
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+63,56,19,67,78,34,65,85,48,43,88
+26,21,84,69,95,63,56,94,73,16,18,19,66,51,35,85,62,67,34,48,68
+65,88,23,87,79,83,28,29,53
+29,39,76,45,81,59,89,18,73,21,84,51,69,63,56,15,95
+47,27,79,65,19,66,87
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+73,65,19,62,34,26,56,66,35,59,95,69,21,78,51,84,67
diff --git a/src/days/d05.rs b/src/days/d05.rs
new file mode 100644
index 0000000..6fb1c1f
--- /dev/null
+++ b/src/days/d05.rs
@@ -0,0 +1,82 @@
+use std::fs;
+
+pub fn solve() {
+    let path = "res/05/input";
+
+    let contents = fs::read_to_string(path).expect("Something went wrong reading the file");
+
+    let (rules_str, updates_str) = contents.split_once("\n\n").unwrap();
+
+    let rules: Vec<(usize, usize)> = rules_str
+        .lines()
+        .map(|s| {
+            s.split_once("|")
+                .map(|(n1, n2)| (n1.parse::<usize>().unwrap(), n2.parse::<usize>().unwrap()))
+                .unwrap()
+        })
+        .collect();
+
+    let updates: Vec<Vec<usize>> = updates_str
+        .lines()
+        .map(|line| {
+            line.split(",")
+                .map(|n| n.parse::<usize>().unwrap())
+                .collect::<Vec<usize>>()
+        })
+        .collect();
+
+    let result: usize = updates
+        .iter()
+        .filter(|upd| {
+            upd.iter().enumerate().all(|(i, n)| {
+                rules
+                    .iter()
+                    .filter(|(n1, _)| *n1 == *n)
+                    .all(|(_, n2)| upd.iter().take(i).all(|n| n != n2))
+            })
+        })
+        .map(|upd| upd[(upd.len() / 2) as usize])
+        .sum();
+
+    println!("Result 1: {}", result);
+
+    let result: usize = updates
+        .iter()
+        .filter(|upd| {
+            !upd.iter().enumerate().all(|(i, n)| {
+                rules
+                    .iter()
+                    .filter(|(n1, _)| *n1 == *n)
+                    .all(|(_, n2)| upd.iter().take(i).all(|n| n != n2))
+            })
+        })
+        .map(|upd| {
+            let mut upd = upd.clone();
+            while upd.iter().enumerate().any(|(i, n)| {
+                rules
+                    .iter()
+                    .filter(|(n1, _)| *n1 == *n)
+                    .any(|(_, n2)| upd.iter().take(i).any(|n| n == n2))
+            }) {
+                for i in 0..upd.len() {
+                    let mut upd2 = upd.clone();
+                    rules
+                        .iter()
+                        .filter(|(n1, _)| *n1 == upd[i])
+                        .filter(|(_, n2)| upd.iter().take(i).any(|n| n == n2))
+                        .take(1)
+                        .for_each(|(_, n2)| {
+                            let pos = upd.iter().position(|n| *n == *n2).unwrap();
+                            upd2[pos] = upd[i];
+                            upd2[i] = *n2;
+                        });
+                    upd = upd2;
+                }
+            }
+            upd
+        })
+        .map(|upd| upd[(upd.len() / 2) as usize])
+        .sum();
+
+    println!("Result 2: {}", result);
+}
diff --git a/src/main.rs b/src/main.rs
index 6ad7161..bd9ccb0 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -29,11 +29,11 @@ fn _all_days() {
     days::d04::solve();
     time = _print_elapsed(time);
 
-    /*
     println!("\nDay 5");
     days::d05::solve();
     time = _print_elapsed(time);
 
+    /*
     println!("\nDay 6");
     days::d06::solve();
     time = _print_elapsed(time);