2016 day25

1 files changed, 32 insertions, 2 deletions

diff --git a/src/2016/day23/aoc.cpp b/src/2016/day23/aoc.cpp
index 2a73886..a3b9b74 100644
--- a/src/2016/day23/aoc.cpp
+++ b/src/2016/day23/aoc.cpp
@@ -3,6 +3,7 @@
 namespace aoc2016 {
 
 static int registers[4] = {7, 0, 0, 0};
+static size_t clock_signal = 0;
 
 static int& get(int i) { return registers[i]; }
 // c = a,b,c,d
@@ -29,10 +30,12 @@ struct instruction23 {
       return toggle_is_odd ? 0 : 3;
     case 't':
       return toggle_is_odd ? 1 : 4;
+    case 'o':
+      return toggle_is_odd ? 1 : 5;
     default:
       break;
     }
-    return 5;
+    return 6;
   }
 };
 
@@ -77,6 +80,19 @@ static void dec(size_t* i, const char* p, const std::vector<instruction23>& todo
   *i += 1;
 }
 
+static void out(size_t* i, const char* p, const std::vector<instruction23>& todos) {
+
+  if (get(*p) == static_cast<int>(clock_signal & 1)) {
+    *i += 1;
+    clock_signal += 1;
+  }
+  else {
+    printf("%zu\n", clock_signal);
+    // printf("%d %d %d %d\n", get('a'), get('b'), get('c'), get('d'));
+    *i = UINT64_MAX;
+  }
+}
+
 static void jnz(size_t* i, const char* p, const std::vector<instruction23>& todos) {
   int d{0};
   bool condition = false;
@@ -114,7 +130,7 @@ static void tgl(size_t* i, const char* p, const std::vector<instruction23>& todo
 static void non(size_t* i, const char* p, const std::vector<instruction23>&) { *i += 1; }
 
 static size_t exec(size_t i, const std::vector<instruction23>& todos) {
-  todo_f fs[6] = {cpy, inc, dec, jnz, tgl, non};
+  todo_f fs[7] = {cpy, inc, dec, jnz, tgl, out, non};
   // const char *ds[6] = {"cpy", "inc", "dec", "jnz", "tgl", "non"};
   auto d = todos[i];
   auto x = d.which();
@@ -141,4 +157,18 @@ std::pair<int64_t, int64_t> day23(line_view file) {
 
   return {get('a'), 0};
 }
+
+std::pair<int64_t, int64_t> day25(line_view file) {
+  for (int i = 0; i < 10000; i++) {
+    printf("%d ", i);
+    get('a') = i;
+    get('b') = 0;
+    get('c') = 0;
+    get('d') = 0;
+    clock_signal = 0;
+    day23(file);
+  }
+
+  return {0, 0};
+}
 } // namespace aoc2016