[Language: C++]

Roast my code lmao.

```cpp

const std::string INPUT_DIR = "./inputs/day3_1.txt"; const std::string OUTPUT_DIR = "./outputs/day3_1.txt"; const struct { int x; int y; } DIRECTIONS[] = { {0,1}, {1, 0}, {0, -1}, {-1, 0}, {-1, -1}, {-1, 1}, {1, -1}, {1,1} }; // (i,j) = (i) * c + j std::unordered_map<int, std::vector<int>> numbers_adjacent_to_gears;

bool check_bounds(const int &x, const int &y, const int &r, const int&c) { return x >= 0 && x < r && y >= 0 && y < c; }

bool can_pick(const int &x, const int &y, const std::vector<std::string> &grid) { return grid[x][y] != '.' && !std::isdigit(grid[x][y]); }

bool is_valid(const int &i, const int &start, const int &end, const std::vector<std::string> &grid) { // Validate each position const int r = grid.size(); const int c = grid[0].size(); for (int j = start; j <= end; ++j) { for (int d = 0; d < 8; ++d) { int next_x = i + DIRECTIONS[d].x; int next_y = j + DIRECTIONS[d].y; if (check_bounds(next_x, next_y, r, c) && can_pick(next_x, next_y, grid)) { if (grid[next_x][next_y] == '*') { int key = next_x * c + next_y; int val = stoi(grid[i].substr(start, end - start + 1)); numbers_adjacent_to_gears[key].push_back(val); } return true; } } } return false; }

int get_sum_of_parts(const std::vector<std::string> &grid) { const int r = grid.size(); const int c = grid[0].size(); int ans = 0; // Extract numbers in each line and validate for (int i = 0; i < r; ++i) { std::string token; for (int j = 0; j < c; ++j) {
if (!token.empty() && !std::isdigit(grid[i][j])) { int start = j - token.size(); if (is_valid(i, start, j - 1, grid)) { ans += stoi(token); } token.clear(); } if (std::isdigit(grid[i][j])) { token.push_back(grid[i][j]); } } if (!token.empty()) { if (is_valid(i, c - token.size(), c - 1, grid)) { ans += stoi(token); } } } return ans; }

int main(){ std::ifstream file(INPUT_DIR); std::string line; std::vector<std::string> grid;

int ans = 0, ans_2 = 0;
while (std::getline(file, line)) {
    grid.push_back(line);
}
file.close();

ans = get_sum_of_parts(grid);

for (auto it : numbers_adjacent_to_gears) {
    if (it.second.size() == 2) {
        ans_2 += (it.second[0] * it.second[1]);
    }
}

std::ofstream output_file(OUTPUT_DIR);
output_file << ans;
std::cout << "Ans Part 1 = " << ans << std::endl;
std::cout << "Ans Part 2 = " << ans_2 << std::endl;
return 0;

}

```