Initial commit

2015/puzzle-16-01.cc

@@ -0,0 +1,69 @@
+#include <cassert>
+#include <cctype>
+#include <climits>
+#include <functional>
+#include <iostream>
+#include <map>
+#include <regex>
+#include <set>
+#include <string>
+#include <variant>
+
+using InfoMap = std::map<std::string, unsigned long>;
+
+static const InfoMap the_real_aunt_sue({{"children", 3},
+                                        {"cats", 7},
+                                        {"samoyeds", 2},
+                                        {"pomeranians", 3},
+                                        {"akitas", 0},
+                                        {"vizslas", 0},
+                                        {"goldfish", 5},
+                                        {"trees", 3},
+                                        {"cars", 2},
+                                        {"perfumes", 1}});
+
+bool matches_sue(std::string const &s) {
+  assert(s.substr(0, 4) == "Sue ");
+  std::size_t pos = 4;
+  std::size_t len = 0;
+  unsigned long id = std::stoul(s.substr(4), &len);
+  std::cout << "Sue " << id << ": ";
+  pos += len;
+  assert(s[pos] == ':');
+  ++pos;
+  while (pos < s.size()) {
+    if (s[pos] == ' ' || s[pos] == ',') {
+      ++pos;
+    } else {
+      auto colon = s.find(':', pos);
+      assert(colon != std::string::npos);
+      std::string name = s.substr(pos, colon - pos);
+      pos = colon + 1;
+      while (pos < s.size() && s[pos] == ' ') {
+        ++pos;
+      }
+      auto amount = std::stoul(s.substr(pos), &len);
+      pos += len;
+      auto it = the_real_aunt_sue.find(name);
+      std::cout << " " << name << "=" << amount;
+      assert(it != the_real_aunt_sue.end());
+      if (it->second != amount) {
+        std::cout << " (NO!)\n";
+        return false;
+      }
+    }
+  }
+  std::cout << "(YES!)\n";
+  return true;
+}
+
+int main(int argc, char **argv) {
+  std::string line;
+  while (std::getline(std::cin, line)) {
+    if (matches_sue(line)) {
+      std::cout << "MATCH: " << line << "\n";
+      return 0;
+    }
+  }
+  return 0;
+}