#include <iostream>
#include <cctype>

std::istream& reverse_word(std::istream& in, std::ostream& out)
{
    char ch;
    
    if (in.get(ch) && !std::isspace(ch))
    {
        reverse_word(in, out);
        out << ch;
    }

    return in;
}

int main()
{
    for (unsigned i = 0; i < 5; ++i)
    {
        reverse_word(std::cin, std::cout);
        std::cout << '\n';
    }
}