#include <iostream>
#include <algorithm>
#include <string>
 
int main()
{
    /* enable for interactive input
    std::cin.tie(&std::cout);
    std::cout << "Enter three words: ";
    */
    std::string w1,w2,w3;
    if (std::cin >> w1 >> w2 >> w3)
    {
        if (w2 > w3)
            std::swap(w2,w3);
        if (w1 > w3)
            std::swap(w1,w3);
        if (w1 > w2)
            std::swap(w1,w2);
    }
 
    std::cout << w1 << '\n';
    std::cout << w2 << '\n';
    std::cout << w3 << '\n';
}

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