lab2.cpp

#include <iostream>
#include <regex>
#include <boost/algorithm/string.hpp>


bool check(std::string str) {
    const std::regex regex("(?:[0-9][a-z][a-z])+");
    return std::regex_match(str, regex);
}

int main() {
    std::string input;
    std::getline(std::cin, input, '\n');

    std::vector<std::string> parts;
    boost::split(parts, input, boost::is_any_of(" "));

    for (auto part: parts) {
        std::cout << part << ": " << std::boolalpha << check(part) << std::endl;
    }

    return 0;
}