Найти количество и тип домов с наибольшим общим количеством квартир

#include "mainwindow.h"
#include <QApplication>
 
int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    MainWindow w;
    w.show();
 
    return a.exec();
}

#include "mainwindow.h"
#include "ui_mainwindow.h"
 
MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);
}
 
MainWindow::~MainWindow()
{
    delete ui;
}

#ifndef MAINWINDOW_H
#define MAINWINDOW_H
 
#include <QMainWindow>
 
namespace Ui {
class MainWindow;
}
 
class MainWindow : public QMainWindow
{
    Q_OBJECT
 
public:
    explicit MainWindow(QWidget *parent = 0);
    ~MainWindow();
 
private:
    Ui::MainWindow *ui;
};
 
#endif // MAINWINDOW_H

#include <QCoreApplication>
 
int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);
 
    return a.exec();
}

c:\qt\mingw\lib\gcc\mingw32\4.4.0\include\c++\cwchar:159: ошибка: '::swprintf' has not been declared
c:\qt\mingw\lib\gcc\mingw32\4.4.0\include\c++\cwchar:166: ошибка: '::vswprintf' has not been declared

house_1:
apartment_count = 10
detail_1_count  = 60
detail_2_count  = 90
 
house_2:
apartment_count = 15
detail_1_count  = 95
detail_2_count  = 131
 
house_3:
apartment_count = 20
detail_1_count  = 110
detail_2_count  = 172
 
details_1_total = 850
details_2_total = 1250