/******************************************************************************

                              Online C++ Compiler.
               Code, Compile, Run and Debug C++ program online.
Write your code in this editor and press "Run" button to compile and execute it.

https://www.onlinegdb.com/online_c++_compiler

*******************************************************************************/

#include <iostream>
#include <string>


void kek(std::string str)
{
    std::cout << str;

    std::string braket;
    for (auto s : str)
    {
    }
}

int main()
{
    std::cout << "Hello World" << std::endl;

    kek("c2[a]3[b]c");
    kek("231[ab]");
    kek("c2[a]3[b]c");
    kek("3[b15[a]]");

    std::string wait;
    std::cin >> wait;
    return 0;
}