1 files changed, 9 insertions, 1 deletions
diff --git a/src/2022/day4/aoc.cpp b/src/2022/day4/aoc.cpp
index 535a5df..0ba53e2 100644
--- a/src/2022/day4/aoc.cpp
+++ b/src/2022/day4/aoc.cpp
@@ -4,7 +4,15 @@
 
 namespace aoc2022 {
 std::pair<int, int> day4(line_view file) {
-  return {0, 0};
+  int c1{0}, c2{0};
+  per_line(file, [&c1, &c2](line_view lv){
+      apair p;
+      p.load(lv);
+      c1 += (int) p.covered();
+      c2 += (int) p.overlap();
+      return true;
+  });
+  return {c1, c2};
 }
 
 } // namespace aoc2022