#include <iostream>
#include <string>
using namespace std;
int main()
{
    string username;
    string password;
    bool success;
    cout <<"\tKek\n";
    do
    {
        cout << "\nUsername: ";
        cin >> username;
        cout << "Password: ";
        cin >> password;
        if (username == "Mr.Serhio" && password == "1234")
    {
        cout << "\nDarou, Serhio.";
        success = true;

    }
        else if (username == "Ms.Eva" && password == "1234")
    {
        cout << "\nDarou, Ms.Eva";
        success = true;
    }
    else
    {
        cout << "\nYour login failed.";
        success = false;
    }
} while (!success);
return 0;
}