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


int main()
{
    std::string alphabet = "abcdefghijklmnopqrstuvwxyz";
    std::string keyword  = "sabbatical";
    alphabet.erase(
        std::remove_if(alphabet.begin(), alphabet.end(), [&keyword](char c)
            {return keyword.find(c) != std::string::npos;}),
        alphabet.end()
    );
    std::cout << keyword << alphabet;
}