Check if C++ program is running in debug mode CLion 2019.3

Hello, how can i check if my program is being debugged at the moment, i want to write something like this(on my pc LOCAL parameter is always true)

void IO () {
    #if (LOCAL && !DEBUGGING)
        freopen("../input.txt", "r", stdin);
        freopen("../output.txt", "w", stdout);
    #else if (DEBUGGING && LOCAL)
        freopen("../input.txt", "r", stdin);
    #else if (!DEBUGGING && !LOCAL)
        fast_io;
    #endif
}