f-task/t.cpp

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#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;
}