Initial commit with solutions from 2024

2025-11-26 21:59:50 +01:00
commit be113565fb
72 changed files with 7030 additions and 0 deletions
@@ -0,0 +1,50 @@
+#include "common/aoc.h"
+
+namespace day03
+{
+  REGISTER_DAY(2024, Day03, std::string, int32_t);
+
+  REGISTER_TEST_EXAMPLE(2024, Day03, ExampleInput, 1, 161);
+  REGISTER_TEST(2024, Day03, Input, 1, 178794710);
+  REGISTER_TEST_EXAMPLE(2024, Day03, ExampleInput, 2, 48);
+  REGISTER_TEST(2024, Day03, Input, 2, 76729637);
+
+  READ_INPUT(input)
+  {
+    return Input::Read(input);
+  }
+
+  int32_t Mult(const std::string& str)
+  {
+    int i, j;
+    std::stringstream ss{str};
+    ss >> "mul(" >> i >> "," >> j >> ")";
+    return i * j;
+  }
+
+  OUTPUT1(input)
+  {
+    int32_t sum = 0;
+    std::vector<std::string> matches = Helper::GetAllRegexMatches(input, "mul\\([0-9]*,[0-9]*\\)");
+    for (auto& str : matches) sum += Mult(str);
+    return sum;
+  }
+
+  OUTPUT2(input)
+  {
+    int32_t sum = 0;
+    bool mul = true;
+    std::vector<std::string> matches =
+      Helper::GetAllRegexMatches(input, "(mul\\([0-9]*,[0-9]*\\)|do\\(\\)|don\'t\\(\\))");
+    for (auto& str : matches)
+    {
+      if (str == "do()")
+        mul = true;
+      else if (str == "don\'t()")
+        mul = false;
+      else if (mul)
+        sum += Mult(str);
+    }
+    return sum;
+  }
+}