1 files changed, 12 insertions, 0 deletions
diff --git a/src/2015/day19/aoc.cpp b/src/2015/day19/aoc.cpp
index 1b3ee2a..b665871 100644
--- a/src/2015/day19/aoc.cpp
+++ b/src/2015/day19/aoc.cpp
@@ -1,4 +1,16 @@
 #include "aoc.h"
 
 namespace aoc2015 {
+
+int day19(line_view file) {
+  molecule m;
+  per_line(file, [&m](line_view lv) {
+    m.parse(lv);
+    return true;
+  });
+  std::map<int, std::vector<molecule::change>> changes;
+  m.check(changes);
+  return m.distinct(changes);
 }
+
+} // namespace aoc2015