advent of code 2022 day 1

.clangd

@@ -0,0 +1,29 @@
+InlayHints:
+    Enabled: Yes
+    ParameterNames: No
+    DeducedTypes: Yes
+    Designators: No
+Diagnostics:
+    ClangTidy:
+        Add: [bugprone-*, clang-analyzer-*, concurrency-* cppcoreguidelines-*, misc-*, modernize-*, performance-*, readability-*]
+        Remove: [
+            bugprone-easily-swappable-parameters,
+
+            cppcoreguidelines-pro-type-vararg,
+            
+            misc-const-correctness,
+            misc-no-recursion,
+            misc-non-private-member-variables-in-classes,
+            
+            modernize-loop-convert, # ranges syntax not supported by linter.
+            modernize-use-auto,
+            modernize-use-nodiscard,
+            modernize-use-trailing-return-type,
+            
+            readability-use-anyofallof,
+            readability-braces-around-statements,
+            readability-convert-member-functions-to-static,
+            readability-identifier-length,
+            readability-magic-numbers,
+            readability-uppercase-literal-suffix
+        ]

.gitignore

@@ -0,0 +1 @@
+**/a.out

README.md

@@ -1 +1,2 @@
-# puzzles
+# Solutions to puzzles
+single files are compile with `g++ -ggdb -Wall -pedantic -std=c++20 -DFMT_HEADER_ONLY`

advent_of_code_2022/day_1/main.cc

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+#include <algorithm>
+#include <charconv>
+#include <fmt/format.h>
+#include <iostream>
+#include <string>
+#include <vector>
+
+int main()
+{
+    std::vector<std::int64_t> elves;
+    elves.push_back(0);
+
+    std::int64_t calories{};
+    std::string buffer;
+
+    while (!std::cin.eof())
+    {
+        std::getline(std::cin, buffer);
+        
+        if (buffer.empty())
+        {
+            elves.push_back(0);
+            continue;
+        }
+        
+        std::from_chars(buffer.data(), buffer.data() + buffer.size(), calories);
+        elves.back() += calories;
+    }
+
+    std::int64_t max = *std::max_element(elves.begin(), elves.end());
+    fmt::print("Elf with most calories has {}\n", max);
+
+    std::int64_t top3{};
+    for (std::size_t idx = 0; idx < 3; ++idx)
+    {
+        auto it = std::max_element(elves.begin(), elves.end());
+        top3 += *it;
+        *it = 0;
+    }
+
+    fmt::print("Top3 elves with most calories have a combined: {}\n", top3);
+}