65 lines
1.4 KiB
C++
65 lines
1.4 KiB
C++
#include <algorithm>
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#include <cstdint>
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#include <array>
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#include <iostream>
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#include <iterator>
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#include <vector>
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#include <string_view>
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#include <numeric>
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#include <aocpp/Startup.hpp>
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namespace {
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auto Part1(std::string const& line) {
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std::size_t part1 = 0;
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auto seen = std::numeric_limits<std::size_t>::max();
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for (auto it = line.begin();
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std::distance(it, line.end()) >= 150;
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std::advance(it, 150))
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{
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auto zeros = std::size_t(std::count(it, it + 150, '0'));
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if (zeros < seen) {
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seen = zeros;
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part1
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= std::count(it, it + 150, '1')
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* std::count(it, it + 150, '2');
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}
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}
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return part1;
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}
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auto Flatten(std::string const& line) {
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std::string merged(150, ' ');
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for (std::size_t i = 0; i < 150; i++) {
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for (auto it = line.begin();
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std::distance(it, line.end()) >= 150;
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std::advance(it, 150))
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{
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if ('2' != it[i]) {
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merged[i] = it[i];
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break;
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}
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}
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}
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return merged;
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}
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auto Draw(std::string const& picture) {
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for (std::size_t y = 0; y < 6; y++) {
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for (std::size_t x = 0; x < 25; x++) {
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std::cout << ('1' == picture[y*25+x] ? "▓" : "░");
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}
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std::cout << std::endl;
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}
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}
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} // namespace
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auto main(int argc, char** argv) -> int {
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std::string line;
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std::getline(aocpp::Startup(argc, argv), line);
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std::cout << "Part 1: " << Part1(line) << std::endl;
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Draw(Flatten(line));
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}
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