From 39111a9d6a336837cbd2a2050d6eabe77edb51c6 Mon Sep 17 00:00:00 2001 From: David Vereb Date: Thu, 8 Dec 2022 23:57:49 -0500 Subject: [PATCH] Day 8 attempt 1 is proof that I should get some sleep. I totally forgot about a couple things and this is hack-n-slashed together nonsense. --- 2022/8/Makefile | 2 + 2022/8/data.txt | 99 +++++++++++++++++++++++++++++ 2022/8/main.cpp | 163 ++++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 264 insertions(+) create mode 100644 2022/8/Makefile create mode 100644 2022/8/data.txt create mode 100644 2022/8/main.cpp diff --git a/2022/8/Makefile b/2022/8/Makefile new file mode 100644 index 0000000..638e325 --- /dev/null +++ b/2022/8/Makefile @@ -0,0 +1,2 @@ +a.out: main.cpp + clang++ -std=c++2b -g -O0 main.cpp diff --git a/2022/8/data.txt b/2022/8/data.txt new file mode 100644 index 0000000..c400166 --- /dev/null +++ b/2022/8/data.txt @@ -0,0 +1,99 @@ +020110220332333020110144320304042020444223003535441353331002333431100300241023221210123003331021020 +002120010112022233203323334422340102033151553341235324543343233301202102130210343113312320222102020 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data.txt." << std::endl; + return -1; + } + + unsigned long total = 0; + unsigned long total_pt2 = 0; + + std::vector> trees; + + // Parse: + for(std::string line; std::getline(ifs, line); ) + { + if(line == "") + continue; + + trees.push_back({}); + for(const char &ch : line) + trees.back().push_back(ch - '0'); + } + + total += 2 * trees.size(); + total += 2 * (trees[0].size() - 2); + + std::set> visible_coordinates; + + // NOTE(dev): +#warning This shit is wrong because it's only finding the FIRST visible tree, not all visible trees. +#warning e.g. If you have 2003005003007004005 +#warning ^ ^ ^ ^ are all visible from the left +#warning ^ is visible from the right + + // left to right, right to left IN EACH ROW: + for(auto y = 1; y < trees.size() - 1; ++y) + { + auto x = 1; + bool found_from_left = false; + while(x < trees[y].size() - 1) + { + std::cout << trees[y][x]; + if(trees[y][x] < trees[y][x-1]) + break; + found_from_left = true; + ++x; + } + if(found_from_left) + { + // make sure it isn't the right-most, as that's already counted + if(x == trees[y].size() - 1) + { + if(trees[y][x] < trees[y][x-1]) + { + std::cout << ": insert {" << (x - 1) << "," << y << "}" + << "(" << trees[y][x-1] << ")"; + visible_coordinates.insert({x - 1, y}); + } + } + else + { + std::cout << ": insert {" << (x - 1) << "," << y << "}" + << "(" << trees[y][x-1] << ")"; + visible_coordinates.insert({x - 1, y}); + + // NOTE(dev): Only search from the right if there's still room to search: + bool found_from_right = false; + auto found_x = x - 1; + x = trees[y].size() - 2; + while(x > found_x) + { + if(trees[y][x] < trees[y][x + 1]) + break; + found_from_right = true; + --x; + } + if(found_from_right) + { + std::cout << ": insert {" << (x + 1) << "," << y << "}" + << "(" << trees[y][x+1] << ")"; + visible_coordinates.insert({x + 1, y}); + } + } + } + std::cout << std::endl; + } + + // top to bottom, bottom to top IN EACH COLUMN: + for(auto x = 1; x < trees[0].size() - 1; ++x) + { + auto y = 1; + bool found_from_top = false; + while(y < trees.size() - 1) + { + if(trees[y][x] < trees[y-1][x]) + break; + found_from_top = true; + ++x; + } + if(found_from_top) + { + // make sure it isn't the bottom-most, as that's already counted + if(y == trees.size() - 1) + { + if(trees[y][x] < trees[y-1][x]) + { + std::cout << ": insert {" << x << "," << (y - 1) << "}" + << "(" << trees[y-1][x] << ")"; + visible_coordinates.insert({x, y - 1}); + } + } + else + { + std::cout << ": insert {" << x << "," << (y - 1) << "}" + << "(" << trees[y-1][x] << ")"; + visible_coordinates.insert({x, y - 1}); + + // NOTE(dev): Only search from the bottom if there's still room to search: + bool found_from_bottom = false; + auto found_y = y - 1; + y = trees.size() - 2; + while(y > found_y) + { + if(trees[y][x] < trees[y + 1][x]) + break; + found_from_bottom = true; + --y; + } + if(found_from_bottom) + { + std::cout << ": insert {" << x << "," << (y + 1) << "}" + << "(" << trees[y+1][x] << ")"; + visible_coordinates.insert({x, y + 1}); + } + } + } + } + + total += visible_coordinates.size(); + + // // track interior + // for(auto y = 1; y < trees.size() - 1; ++y) + // { + // // left & right, first + // for(auto x = 1; x < trees[y].size() - 1; ++x) + // { + + // } + // } + + std::cout << " Total: " << total << std::endl; + std::cout << "PT2 Total: " << total_pt2 << std::endl; + + return 0; +}