#include <iostream>
#include <string>
#include <sstream>
int main()
{
    std::string str = "10";
    int n;
    std::istringstream input(str);
    input >> n;
    n *= 10;
    std::ostringstream output;
    output << n;
    str = output.str();
    std::cout << str << '\n';
}