Normalising st:cout using definititions

Problem

I have code to compare nodes in sets of XML files. However each set (A.xml + B.xml) have different names for the nodes and I need the output st:cout to always be consistent no matter what the input is. This is the example output of the program:

<entry>
    <id><![CDATA[946757316]]></id>
    <url><![CDATA[http://ift.tt/1HRvcWA;
    <content><![CDATA[Specialized Dolce Sport 27 Speed]]></content>
    <title><![CDATA[Bike]]></title>
    <price><![CDATA[£600]]></price>
    <date><![CDATA[01-AUG-13]]></date>
    </entry>

Possible solution

Each time I do a comparison of A.xml and B.xml I define any nodes which do not follow default mappings. For example my standard node name for the description is "description" but in this example it is called "content" so I need to define it like this (description = content;), which means the line will be output like this:

<description><![CDATA[Specialized Dolce Sport 27 Speed]]></description>

Existing code

#include "pugi/pugixml.hpp"

#include <iostream>
#include <string>
#include <map>

int main() {
    pugi::xml_document doca, docb;
    std::map<std::string, pugi::xml_node> mapa, mapb;

    if (!doca.load_file("a.xml") || !docb.load_file("b.xml")) { 
        std::cout << "Can't find input files";
        return 1;
    }

    for (auto& node: doca.child("jobsite_vacancies").children("job")) {
        const char* id = node.child_value("id");
        mapa[id] = node;
    }

    for (auto& node: docb.child("jobsite_vacancies").children("job")) {
        const char* idcs = node.child_value("id");
        if (!mapa.erase(idcs)) {
            mapb[idcs] = node;
        }
    }

    for (auto& ea: mapa) {
        std::cout << "Removed:" << std::endl;
        ea.second.print(std::cout);
    }

    for (auto& eb: mapb) {
        std::cout << "Added:" << std::endl;
        eb.second.print(std::cout);
    }

}

I'm new to C++ so any suggestions on how to implement this would be appreciated. I have to run this on tens of thousands of fields so performance is key.