#include <iostream>
#include <fstream>
#include <sstream>
#include <vector>
#include <string>
#include <cctype>
// Function to check if a character is a delimiter (non-alphanumeric)
bool isDelimiter(char c) {
    return !std::isalnum(c);
}
// Function to split a line into words based on delimiters
std::vector<std::string> parseWords(const std::string& line) {
    std::vector<std::string> words;
    std::string word;
    for (char c : line) {
        if (isDelimiter(c)) {
            if (!word.empty()) {
                words.push_back(word);
                word.clear();
            }
        } else {
            word += c;
        }
    }
    if (!word.empty()) {
        words.push_back(word);
    }
    return words;
}
int main() {
    std::ifstream file("input.txt");
    if (!file) {
        std::cerr << "Unable to open file.n";
        return 1;
    }
    std::vector<std::string> allWords;
    std::string line;
    while (std::getline(file, line)) {
        std::vector<std::string> words = parseWords(line);
        allWords.insert(allWords.end(), words.begin(), words.end());
    }
    file.close();
    // Optional: Print words to verify
    for (const auto& word : allWords) {
        std::cout << word << "n";
    }
    return 0;
}