#include <QCoreApplication>

int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);

    QList<QList<int>> master;
    QList<int> slave;
    slave.append(10);
    slave.append(13);
    slave.append(11);
    slave.append(16);

    master.append(slave);
    master.append(slave);

    return a.exec();
}