== Source == Is it possible to find a source
== Source == Is it possible to find a source that is a source?

A:

You can use the following code to find the source:
#include <iostream>
#include <string>
#include <vector>
#include <string>
#include <string>
#include <vector>
#include <vector>
#include <string>
#include <vector>
#include <vector>
#include <string>
