1 files changed, 12 insertions, 11 deletions

diff --git a/src/2022/day16/aoc.cpp b/src/2022/day16/aoc.cpp
index 41d21ac..ee2f409 100644
--- a/src/2022/day16/aoc.cpp
+++ b/src/2022/day16/aoc.cpp
@@ -140,20 +140,21 @@ void flow(valve_m vs[2], std::map<valve_mm, int>& visited, std::map<valve*, int>
   }
   if (vs[0].m == 0 && vs[1].m == 0) {
     if (*max < total) {
+      printf("total is %d\n", total);
       *max = total;
     }
   } else {
     auto p = visited.insert({{vs[0], vs[1]}, total});
     if (!p.second) {
-      return;
-      // if (total <= p.first->second) {
-      //   return;
-      // }
+      if (p.first->second >= total) {
+        return;
+      }
+      p.first->second = total;
+    }
+    for (auto i = 0; i < 2; i++) {
+      std::cout << i << " at " << vs[i].v->name << " when " << vs[i].m << " minutes left, total is " << total
+                << std::endl;
     }
-    // for (auto i = 0; i < 2; i++) {
-    //   std::cout << i << " at " << vs[i].v->name << " when " << vs[i].m << " minutes left, total is " << total
-    //             << std::endl;
-    // }
     if (os >= maxopened) {
       vs[0].m -= vs[0].m > 0 ? 1 : 0;
       vs[1].m -= vs[1].m > 0 ? 1 : 0;
@@ -176,15 +177,15 @@ void flow(valve_m vs[2], std::map<valve_mm, int>& visited, std::map<valve*, int>
         auto& ns0 = diagram[vs[0].v];
         auto& ns1 = diagram[vs[1].v];
         for (auto& n0 : ns0) {
+          auto g0 = !is_open(n0.v, opened);
           for (auto& n1 : ns1) {
-            if (n0.v != n1.v) {
+            auto g1 = !is_open(n1.v, opened);
+            if (n0.v != n1.v && (g0 || g1)) {
               valve_m vx[2];
               vx[0] = vs[0];
               vx[1] = vs[1];
 
-              auto g0 = !is_open(n0.v, opened);
               auto m0 = vx[0].m > n0.m;
-              auto g1 = !is_open(n1.v, opened);
               auto m1 = vx[1].m > n1.m;
               if (update(vx, n0, g0, m0, n1, g1, m1)) {
                 auto v = visited;