#include <iostream>
#include <string>
using namespace std;

class User {
protected:
  string username;
  string password;
  int permission;
  bool isLoggedIn;
public:
  User(string u, string p) {
    username = u;
    password = p;
    isLoggedIn = false;
  }
  void login(string u, string p) {
    if(username == u && password == p) isLoggedIn = true; }
  void logout() { isLoggedIn = false; }
};

class ClientUser: User {
public:
  ClientUser(string u, string p, int pe): User(u, p) { setPermission(pe); }
  void setPermission(int p) { if(p >= 0 && p <= 2)
    permission = p; else permission = 0; }
  int getPermission() { return permission; }
};

class Administrator: User {
public:
  Administrator(string u, string p, int pe): User(u, p) { setPermission(pe); }
  void setPermission(int p) { if(p >= 0 && p <= 3)
    permission = p; else permission = 0; }
  int getPermission() { return permission; }
};