D_new

#include <iostream>
#include <string>
#include <algorithm>
#include <vector>

std::string erase_all(std::string s, char el) {
	for (int i = 0; i < (int)s.size(); i++) {
		if (s[i] == el) {
			s.erase(i, 1);
			i--;
		}
	}
	std::cout << s << "<----" << std::endl;
	return s;
}

bool equal(std::string s) {
	for (int i = 1; i < (int)s.size(); i++) {
		if (s[0] != s[i]) {
			return false;
		}
	}
	return true;
}

int main() {
	freopen("input.txt", "r", stdin);
	//freopen("output.txt", "w", stdout);
 	std::string num;
    std::cin >> num;

    std::vector<std::string> res;
    while (!equal(num)) {
    	std::string tmp = "";
    	for (char i = '1'; i <= '9'; i++) {
    	    tmp = std::max(tmp, erase_all(num, i));
    	}
    	res.push_back(tmp);
    	num = tmp;
    }

    std::cout << res.size() << std::endl;
    for (int i = 0; i < (int)res.size(); i++) {
    	std::cout << res[i] << std::endl;
    }

    return 0;
}