1 files changed, 26 insertions, 1 deletions
diff --git a/src/2020/day6/aoc.h b/src/2020/day6/aoc.h
index c5ad3d1..dc2989d 100644
--- a/src/2020/day6/aoc.h
+++ b/src/2020/day6/aoc.h
@@ -3,4 +3,29 @@
 
 namespace aoc2020 {
 
-}
+struct question_group {
+  line_view people;
+  int count[26] = {0};
+
+  int summary() const noexcept {
+    int total{0};
+    for (int x : count) {
+      total += int(x > 0);
+    }
+    return total;
+  }
+
+  question_group(line_view lv) : people(lv) {
+    const char* p = lv.line;
+    while (p < lv.line + lv.length) {
+      if (*p >= 'a' && *p <= 'z') {
+        count[*p - 'a'] += 1;
+      }
+      p++;
+    }
+  }
+};
+
+int day6(line_view);
+
+} // namespace aoc2020