1 files changed, 49 insertions, 0 deletions
diff --git a/src/2022/day16/aoc.h b/src/2022/day16/aoc.h
index 82e0895..7678742 100644
--- a/src/2022/day16/aoc.h
+++ b/src/2022/day16/aoc.h
@@ -1,5 +1,54 @@
 #include "common.h"
+#include <vector>
+#include <map>
 
 namespace aoc2022 {
+
+struct valve {
+  line_view name;
+  int rate = 0;
+  std::vector<line_view> others;
+
+  friend bool operator<(const valve& v1, const valve& v2) {
+    return v1.rate > v2.rate;
+  }
+
+  void get_number(const char** pp, int* d) {
+    const char* p = *pp;
+    while(*p >= '0' && *p <= '9') {
+      *d = *d * 10 + *p - '0';
+      p++;
+    }
+    *pp = p;
+  }
+
+  bool isAZ(const char* p) {
+    return *p >= 'A' && *p <= 'Z';
+  }
+
+  bool is09(const char* p) {
+    return *p >= '0' && *p <= '9';
+  }
+
+  valve(line_view lv) {
+    const char *p = lv.line;
+    while (p < lv.line + lv.length) {
+      if (is09(p)) {
+        get_number(&p, &rate);
+      }
+      if (isAZ(p) && isAZ(p+1)) {
+          if (*(p+3) == 'h') {
+              name = line_view{p, 2};
+          }
+          else {
+              others.push_back({p, 2});
+          }
+      }
+      p++;
+    }
+  }
+};
+
+
 std::pair<int, int> day16(line_view);
 }