91 lines
2.6 KiB
C++
91 lines
2.6 KiB
C++
#include <span>
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#include <algorithm>
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#include <ranges>
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#include <string>
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#include <string_view>
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#include <utility>
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#include <vector>
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#include "fmt/std.h"
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#include "aoc/types.hpp"
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#include "aoc/utils.hpp"
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using namespace std::string_view_literals;
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using namespace aoc::types;
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// starts at 50
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[[maybe_unused]]constexpr auto raw_str = R"(
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3-5
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10-14
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16-20
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12-18
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1
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5
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8
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11
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17
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32
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)";
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static auto entry([[maybe_unused]]std::span<char const*> const& args) -> void {
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// std::string str{raw_str};
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auto str = aoc::read_text("./input.txt").value_or("");
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str = aoc::trim(str);
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fmt::print("INPUT\n");
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fmt::print("⎻⎼⎽⎼⎻⎺⎻⎼⎽⎼⎻⎺⎻⎼⎽⎼⎻⎺⎻⎼⎽⎼⎻⎺⎻⎼⎽⎼⎻⎺⎻⎼⎽⎼⎻⎺⎻⎼⎽⎼⎻⎺⎻⎼⎽⎼⎻⎺⎻⎼⎽⎼⎻⎺⎻⎼⎽⎼⎻⎺⎻⎼⎽⎼⎻⎺⎻⎼⎽⎼⎻⎺⎻⎼⎽⎼⎻⎺⎻⎼\n");
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fmt::print("{}\n", str);
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fmt::print("{}\n", std::string(80, '-'));
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auto id_spec = str | std::views::split("\r\n\r\n"sv) | std::views::transform([](auto const& str) {
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return aoc::trim({std::begin(str), std::end(str)});
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}) | std::ranges::to<std::vector>();
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if (id_spec.size() < 2) throw std::runtime_error("ID specification is not valid");
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auto id_range = id_spec[0] | std::views::split("\n"sv) | std::views::transform([](auto const& str) {
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return std::ranges::fold_left(str | std::views::split("-"sv), std::vector<f64>{}, [](auto a, auto const& v) {
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a.push_back(std::stod(std::string({std::begin(v), std::end(v)})));
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return a;
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});
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}) | std::ranges::to<std::vector>();
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auto ids = id_spec[1] | std::views::split("\n"sv) | std::views::transform([](auto const& str) {
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return std::stod(std::string{std::begin(str), std::end(str)});
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}) | std::ranges::to<std::vector>();
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f64 sum = 0;
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for (usize i = 0; i < ids.size(); ++i) {
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auto const id = ids[i];
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bool is_valid = false;
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for (usize j = 0; j < id_range.size(); ++j) {
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auto const a = id_range[j][0];
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auto const b = id_range[j][1];
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if (id >= a && id <= b) {
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is_valid = true;
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break;
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}
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}
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fmt::print("id: {} is {}\n", id, is_valid ? "valid" : "not valid");
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if (is_valid) ++sum;
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}
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fmt::print("res: {}\n", sum);
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}
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auto main([[maybe_unused]]int argc, [[maybe_unused]]char const* argv[]) -> int {
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try {
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entry({argv, std::next(argv, argc)});
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} catch (std::exception const& e) {
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fmt::print(stderr, "{}\n", e.what());
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return 1;
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}
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return 0;
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}
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