1 files changed, 35 insertions, 1 deletions
diff --git a/src/2016/day22/aoc.h b/src/2016/day22/aoc.h
index b0ad2ba..d368f22 100644
--- a/src/2016/day22/aoc.h
+++ b/src/2016/day22/aoc.h
@@ -3,5 +3,39 @@
 #include <vector>
 
 namespace aoc2016 {
+
+struct grid_node {
+  int x = 0;
+  int y = 0;
+  int s[4] = {0}; // size, used, avail, use%
+
+  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;
+  }
+
+  grid_node(line_view lv) {
+    int* ds[] = {&x, &y, s, s + 1, s + 2, s + 3};
+    const char* p = lv.line;
+    int i{0};
+    while (p < lv.line + lv.length) {
+      if (*p >= '0' && *p <= '9') {
+        get_number(&p, ds[i]);
+        i++;
+      }
+      p++;
+    }
+  }
+
+  void print() const noexcept { printf("(%d,%d) %d %d %d %d\n", x, y, s[0], s[1], s[2], s[3]); }
+  friend bool operator<(const grid_node& n1, const grid_node& n2) {
+    return n1.s[2] > n2.s[2] ? true : n1.s[2] < n2.s[2] ? false : n1.s[0] > n2.s[0];
+  }
+};
+
 std::pair<int64_t, int64_t> day22(line_view);
-}
+} // namespace aoc2016