Day 2

CMakeLists.txt

@@ -10,3 +10,4 @@ if( NOT CMAKE_BUILD_TYPE )
 endif()
 
 add_executable(d1 "d1/main.cxx") 
+add_executable(d2 "d2/main.cxx") 

d2/main.cxx

@@ -0,0 +1,31 @@
+#include <iostream>
+#include <fstream>
+#include <sstream>
+#include <string>
+
+int main()
+{
+  std::ifstream file{"../d2/input.txt"};
+
+  uint32_t tot{0};
+  uint8_t e, y;
+
+  std::string line;
+  while (std::getline(file, line))
+  {
+    std::stringstream iss{line};
+
+    iss >> e >> y;
+    int es{(e % 65)}, ys{(y % 88)};
+
+    if (y == 'Z')
+      tot += 7 + ((es + 1) % 3);
+    else if (y == 'Y')
+      tot += 4 + es;
+    else
+      tot += 1 + ((es + 2) % 3);
+  }
+
+  std::cout << tot << std::endl;
+  return 0;
+}