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aoc24: add day16

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This commit is contained in:
Pratchaya Khansomboon
2024-12-16 16:43:34 +01:00
parent 1108b8c65b
commit 9c840a7c8f
15 changed files with 976 additions and 8 deletions
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13
sol/24/day11.cpp
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@@ -20,7 +20,7 @@ public:
m_stones = str | std::views::filter([](auto const& c) { return c != '\n'; })
| std::views::split(" "sv)
| std::views::transform([](auto const& c_str) {
return std::stoll(std::string(std::begin(c_str), std::end(c_str)));
return i64(std::stoll(std::string(std::begin(c_str), std::end(c_str))));
}) | std::ranges::to<std::vector>();
}
@@ -44,15 +44,16 @@ public:
m_stones = stones;
}
auto blink(usize order, std::span<i64*> const& stones) -> void {
auto blink(usize order, std::span<i64> const& stones) -> void {
std::vector<i64> compute{};
for (usize i = 0; i < stones.size(); ++i) {
auto const stone = stones[i];
auto const str = std::to_string(*stone);
auto const str = std::to_string(stone);
if (stone == 0) compute.emplace_back(1);
else if (str.length() % 2 == 0) {
fmt::print("{}\n", str);
auto const a = std::stoll(str.substr(0, str.length() / 2));
auto const b = std::stoll(str.substr(str.length() / 2));
compute.emplace_back(a);
@@ -115,7 +116,7 @@ auto aoc24::day11([[maybe_unused]]std::span<char const*> const& args) -> std::ex
auto const max_threads = std::thread::hardware_concurrency();
for (i32 i = 0; i < 75; ++i) {
auto const& stones = magic.data();
auto stones = magic.data();
auto chunk_size = stones.size() / max_threads;
if (chunk_size == 0) chunk_size = stones.size();
@@ -125,8 +126,8 @@ auto aoc24::day11([[maybe_unused]]std::span<char const*> const& args) -> std::ex
auto end_index = std::min((k + 1) * chunk_size, stones.size());
if (start_index >= stones.size()) break;
// Fix: Proper range span construction
std::span<i64*> split{stones.data(), static_cast<std::size_t>(2)};
std::span<i64> sp{stones};
std::span<i64> split = sp.subspan(start_index, end_index);
threads.emplace_back([&]{ magic.blink(k, split); });
}
for (usize k = 0; k < threads.size(); ++k) {