74 lines
2.1 KiB
C++
74 lines
2.1 KiB
C++
#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"(
|
|
987654321111111
|
|
811111111111119
|
|
234234234234278
|
|
818181911112111
|
|
)";
|
|
|
|
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 jolts_str = str | std::views::split("\n"sv) | std::views::transform([](auto const& str) {
|
|
return aoc::trim(std::string{std::begin(str), std::end(str)});
|
|
}) | std::ranges::to<std::vector>();
|
|
|
|
|
|
std::vector<u64> jolts{};
|
|
jolts.reserve(jolts_str.size());
|
|
for (auto const& jolt : jolts_str) {
|
|
u64 largest = 0;
|
|
for (usize i = 0; i < jolt.size(); ++i) {
|
|
for (usize j = i + 1; j < jolt.size(); ++j) {
|
|
auto const value = std::stoull(fmt::format("{}{}", jolt[i], jolt[j]));
|
|
if (value > largest) largest = value;
|
|
}
|
|
}
|
|
|
|
jolts.push_back(largest);
|
|
}
|
|
|
|
for (auto const& jolt : jolts) {
|
|
fmt::print("{}\n", jolt);
|
|
}
|
|
|
|
auto sum = std::ranges::fold_left(jolts, u64(0), [&](auto a, auto v) {
|
|
return a + v;
|
|
});
|
|
|
|
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;
|
|
}
|