diff --git a/2024/day-01/main.cpp b/2024/day-01/main.cpp
index d21b9f6..c201014 100644
--- a/2024/day-01/main.cpp
+++ b/2024/day-01/main.cpp
@@ -33,12 +33,25 @@ int main()
     sort(list1);
     sort(list2);
 
+    // Part one
     int totalDistance = 0;
-
     for (size_t i = 0; i < list1.size(); i++) {
         int distance = list1[i] - list2[i];
         totalDistance += (distance >= 0) ? distance : -distance;
     }
-
     cout << "Total distance between the lists: " << totalDistance << endl;
+
+    // Part two
+    int similarityScore = 0;
+    size_t index2 = 0;
+    for (size_t index1 = 0; index1 < list1.size(); index1++) {
+        while ((index2 < list2.size()) && (list1[index1] > list2[index2])) {
+            index2++;
+        }
+        while ((index2 < list2.size()) && (list1[index1] == list2[index2])) {
+            similarityScore += list2[index2];
+            index2++;
+        }
+    }
+    cout << "Similarity Score: " << similarityScore << endl;
 }