2025 day 07 p1

2025/CMakeLists.txt

@@ -32,4 +32,7 @@ add_day_executables(
     "day02.cpp"
     "day03.cpp"
     "day04.cpp"
+    "day05.cpp"
+    "day06.cpp"
+    "day07.cpp"
 )

2025/day05.cpp

@@ -0,0 +1,90 @@
+#include <span>
+#include <algorithm>
+#include <ranges>
+#include <string>
+#include <string_view>
+#include <utility>
+#include <vector>
+
+#include "fmt/std.h"
+
+#include "aoc/types.hpp"
+#include "aoc/utils.hpp"
+
+using namespace std::string_view_literals;
+using namespace aoc::types;
+
+// starts at 50
+[[maybe_unused]]constexpr auto raw_str = R"(
+3-5
+10-14
+16-20
+12-18
+
+1
+5
+8
+11
+17
+32
+)";
+
+static auto entry([[maybe_unused]]std::span<char const*> const& args) -> void {
+    // std::string str{raw_str};
+    auto str = aoc::read_text("./input.txt").value_or("");
+    str = aoc::trim(str);
+
+    fmt::print("INPUT\n");
+    fmt::print("⎻⎼⎽⎼⎻⎺⎻⎼⎽⎼⎻⎺⎻⎼⎽⎼⎻⎺⎻⎼⎽⎼⎻⎺⎻⎼⎽⎼⎻⎺⎻⎼⎽⎼⎻⎺⎻⎼⎽⎼⎻⎺⎻⎼⎽⎼⎻⎺⎻⎼⎽⎼⎻⎺⎻⎼⎽⎼⎻⎺⎻⎼⎽⎼⎻⎺⎻⎼⎽⎼⎻⎺⎻⎼⎽⎼⎻⎺⎻⎼\n");
+    fmt::print("{}\n", str);
+    fmt::print("{}\n", std::string(80, '-'));
+
+    auto id_spec = str | std::views::split("\r\n\r\n"sv) | std::views::transform([](auto const& str) {
+        return aoc::trim({std::begin(str), std::end(str)});
+    }) | std::ranges::to<std::vector>();
+
+    if (id_spec.size() < 2) throw std::runtime_error("ID specification is not valid");
+
+    auto id_range = id_spec[0] | std::views::split("\n"sv) | std::views::transform([](auto const& str) {
+        return std::ranges::fold_left(str | std::views::split("-"sv), std::vector<f64>{}, [](auto a, auto const& v) {
+                a.push_back(std::stod(std::string({std::begin(v), std::end(v)})));
+                return a;
+            });
+    }) | std::ranges::to<std::vector>();
+
+    auto ids = id_spec[1] | std::views::split("\n"sv) | std::views::transform([](auto const& str) {
+        return std::stod(std::string{std::begin(str), std::end(str)});
+    }) | std::ranges::to<std::vector>();
+
+    f64 sum = 0;
+
+    for (usize i = 0; i < ids.size(); ++i) {
+        auto const id = ids[i];
+        bool is_valid = false;
+        for (usize j = 0; j < id_range.size(); ++j) {
+            auto const a = id_range[j][0];
+            auto const b = id_range[j][1];
+
+            if (id >= a && id <= b) {
+                is_valid = true;
+                break;
+            }
+        }
+
+        fmt::print("id: {} is {}\n", id, is_valid ? "valid" : "not valid");
+
+        if (is_valid) ++sum;
+    }
+
+    fmt::print("res: {}\n", sum);
+}
+
+auto main([[maybe_unused]]int argc, [[maybe_unused]]char const* argv[]) -> int {
+    try {
+        entry({argv, std::next(argv, argc)});
+    } catch (std::exception const& e) {
+        fmt::print(stderr, "{}\n", e.what());
+        return 1;
+    }
+    return 0;
+}

2025/day06.cpp

@@ -0,0 +1,84 @@
+#include <span>
+#include <algorithm>
+#include <ranges>
+#include <string>
+#include <string_view>
+#include <utility>
+#include <vector>
+
+#include "fmt/std.h"
+
+#include "aoc/types.hpp"
+#include "aoc/utils.hpp"
+
+using namespace std::string_view_literals;
+using namespace aoc::types;
+
+// starts at 50
+[[maybe_unused]]constexpr auto raw_str = R"(
+123 328  51 64
+ 45 64  387 23
+  6 98  215 314
+*   +   *   +
+)";
+
+static auto entry([[maybe_unused]]std::span<char const*> const& args) -> void {
+    // std::string str{raw_str};
+    auto str = aoc::read_text("./input.txt").value_or("");
+    str = aoc::trim(str);
+
+    // fmt::print("INPUT\n");
+    // fmt::print("⎻⎼⎽⎼⎻⎺⎻⎼⎽⎼⎻⎺⎻⎼⎽⎼⎻⎺⎻⎼⎽⎼⎻⎺⎻⎼⎽⎼⎻⎺⎻⎼⎽⎼⎻⎺⎻⎼⎽⎼⎻⎺⎻⎼⎽⎼⎻⎺⎻⎼⎽⎼⎻⎺⎻⎼⎽⎼⎻⎺⎻⎼⎽⎼⎻⎺⎻⎼⎽⎼⎻⎺⎻⎼⎽⎼⎻⎺⎻⎼\n");
+    // fmt::print("{}\n", str);
+    // fmt::print("{}\n", std::string(80, '-'));
+
+    auto vec = str | std::views::split("\n"sv) | std::views::transform([](auto&& line) {
+            return line | std::views::split(" "sv)
+                        | std::views::filter([](auto&& tok) { return !std::ranges::empty(tok); })
+                        | std::views::transform([](auto&& tok) {
+                            return std::string{std::begin(tok), std::end(tok)};
+                          })
+                        | std::ranges::to<std::vector>();
+      }) | std::ranges::to<std::vector>();
+
+    std::vector<std::vector<f64>> nums{};
+    std::vector<std::string> ops{};
+
+    for (usize i = 0; i < vec.size(); ++i) {
+        for (usize j = 0; j < vec[i].size(); ++j) {
+            auto const& value = vec[i][j];
+            if (nums.size() <= j) nums.push_back({});
+            if (value == "*" || value == "+") {
+                ops.push_back(value);
+                continue;
+            }
+            nums[j].push_back(std::stod(vec[i][j]));
+        }
+    }
+
+    // fmt::print("{} {}\n", nums.size(), ops.size());
+
+    f64 sum = 0.0;
+    for (usize i = 0; i < nums.size(); ++i) {
+        auto const& op = ops[i];
+        f64 row_sum = op == "*" ? 1.0 : 0.0;
+        for (usize j = 0; j < nums[i].size(); ++j) {
+            if (op == "*") row_sum *= nums[i][j];
+            else if (op == "+") row_sum += nums[i][j];
+        }
+        // fmt::print("sum: {}\n", row_sum);
+        sum += row_sum;
+    }
+
+    fmt::print("res: {}\n", sum);
+}
+
+auto main([[maybe_unused]]int argc, [[maybe_unused]]char const* argv[]) -> int {
+    try {
+        entry({argv, std::next(argv, argc)});
+    } catch (std::exception const& e) {
+        fmt::print(stderr, "{}\n", e.what());
+        return 1;
+    }
+    return 0;
+}

2025/day07.cpp

@@ -0,0 +1,108 @@
+#include <span>
+#include <algorithm>
+#include <ranges>
+#include <string>
+#include <string_view>
+#include <utility>
+#include <vector>
+#include <tuple>
+
+#include "fmt/std.h"
+
+#include "aoc/types.hpp"
+#include "aoc/utils.hpp"
+
+using namespace std::string_view_literals;
+using namespace aoc::types;
+
+// starts at 50
+[[maybe_unused]]constexpr auto raw_str = R"(
+.......S.......
+...............
+.......^.......
+...............
+......^.^......
+...............
+.....^.^.^.....
+...............
+....^.^...^....
+...............
+...^.^...^.^...
+...............
+..^...^.....^..
+...............
+.^.^.^.^.^...^.
+...............
+)";
+
+static auto entry([[maybe_unused]]std::span<char const*> const& args) -> void {
+    // std::string str{raw_str};
+    auto str = aoc::read_text("./input.txt").value_or("");
+    str = aoc::trim(str);
+
+    auto mat = str | std::views::split("\n"sv) | std::views::transform([](auto line) {
+                    return line | std::views::split(""sv)
+                                | std::views::transform([](auto tok) {
+                                        return std::string{std::begin(tok), std::end(tok)};
+                                    })
+                                | std::ranges::to<std::vector>();
+      }) | std::ranges::to<std::vector>();
+
+    struct beam {
+        usize row;
+        usize col;
+    };
+
+    std::vector<beam> beams{};
+    for (usize i = 0; i < mat.size(); ++i) {
+        for (usize j = 0; j < mat[i].size(); ++j) {
+            if (mat[i][j] == "S") {
+                beams.push_back({i, j});
+                break;
+            }
+
+            auto const size = beams.size();
+            for (usize k = 0; k < size; ++k) {
+                if (beams[k].row == i - 1 && beams[k].col == j) {
+                    if (mat[i][j] == ".") {
+                        mat[i][j] = "|";
+                        beams[k] = {i, j};
+                    } else if (mat[i][j] == "^") {
+                        beams[k] = {i, j - 1};
+                        beams.push_back({i, j + 1});
+                        mat[i][j - 1] = "|";
+                        mat[i][j + 1] = "|";
+                    }
+                }
+            }
+        }
+    }
+
+    f64 sum = 0.0;
+    for (usize i = 0; i < mat.size(); ++i) {
+        for (usize j = 0; j < mat[i].size(); ++j) {
+            if (mat[i][j] == "^") {
+                if (mat[i - 1][j] == "|") sum += 1;
+            }
+        }
+    }
+
+    fmt::print("res: {}\n", sum);
+
+    // for (auto const& row : mat) {
+    //     for (auto const& col : row) {
+    //         fmt::print("{}", col);
+    //     }
+    //     fmt::print("\n");
+    // }
+}
+
+auto main([[maybe_unused]]int argc, [[maybe_unused]]char const* argv[]) -> int {
+    try {
+        entry({argv, std::next(argv, argc)});
+    } catch (std::exception const& e) {
+        fmt::print(stderr, "{}\n", e.what());
+        return 1;
+    }
+    return 0;
+}