All algos
https://docs.microsoft.com/en-us/cpp/standard-library/algorithm?view=msvc-160

Ostream
https://docs.microsoft.com/en-us/cpp/standard-library/overloading-the-output-operator-for-your-own-classes?view=msvc-160

class Date
{
    int mo, da, yr;
public:
    Date(int m, int d, int y)
    {
        mo = m; da = d; yr = y;
    }
    friend ostream& operator<<(ostream& os, const Date& dt);
};

ostream& operator<<(ostream& os, const Date& dt)
{
    os << dt.mo << '/' << dt.da << '/' << dt.yr;
    return os;
}


timeout
https://docs.microsoft.com/en-us/cpp/standard-library/effects-of-buffering?view=msvc-160


cout formatting
https://docs.microsoft.com/en-us/cpp/standard-library/using-insertion-operators-and-controlling-format?view=msvc-160


c++ lambda examples
https://docs.microsoft.com/en-us/cpp/cpp/examples-of-lambda-expressions?view=msvc-160