#include <iostream>
#include <string>

using namespace std;

char oText[] = {71, 114, 101, 97, 116, 32, 87, 111, 114, 107, 33};
char kText[] = {70, 97, 105, 108, 101, 100, 33, 32, 84, 114, 121, 32, 105, 116, 32, 97, 110, 111, 116, 104, 101, 114, 32, 116, 105, 109, 101, 33};
char uText[] = {85, 115, 101, 114, 58, 32};
char pText[] = {80, 97, 115, 115, 119, 58, 32};

void WriteInfo()
{
  cout << "------------ Welcome to CrackMe1 ------------" << endl;
  cout << "|                                           |" << endl;
  cout << "| Objectives:                               |" << endl;
  cout << "|   1. Patch me for any key                 |" << endl;
  cout << "|   2. Create a keygen                      |" << endl;
  cout << "|   3. Create a DLL to patch me             |" << endl;
  cout << "|                                           |" << endl;
  cout << "-------------- The game starts --------------" << endl;
  cout << endl;
}

int GetUser()
{
  string user;
  cout << uText;
  cin >> user;

  int result1 = 0;
  int result2 = 0;

  for (int i=0; i < user.length(); ++i)// Makes a XOR between the char and (user.length()-i)*7 and addit to result1
  {
    int value = 0;
    value = user[i];
    result1 += value ^ (user.length() - i)*7;
  }

  while (result1 != 0) // Reverse the value of result1 and changes individual values for his "opposite"
  {
    result2 = 10 - (result1 % 10);
    result1 = result1/10;
    result2 = result2*10;
  }
  return result2;
}

string TransformPassw(string& passw) //Transforms the passw. If a number or char, rests 1, else convert the char to a char number
{
  for (int i=0; i < passw.length(); ++i)
  {
    if( (passw[i] >= 48 && passw[i] <= 57) || (passw[i] >= 65 && passw[i] <= 90) || (passw[i] >= 97 && passw[i] <= 122) )
    {
      switch(passw[i])
      {
    case 48: passw[i] = 57; break;
    case 65: passw[i] = 122; break;
    case 97: passw[i] = 90; break;
      };
    }
    else passw[i] = 48 + (passw[i] % 10);
  }
  return passw;
}

int GetPassw()
{
  string passw;
  cout << pText;
  cin >> passw;

  int pairs = 1;
  int odds = 1;
  passw = TransformPassw(passw);
  for (int i=1; i < passw.length(); i += 2)
  {
    int value = passw[i-1];
    passw[i-1] = passw[i];
    passw[i] = value;

    pairs *= passw[i-1] / 10;
    odds *= passw[i] % 10;
  }
  return (pairs+odds);
}

bool CompareValues(int user, int passw)
{
  bool resul = ((user ^ 1234) == (passw ^ 4321));
  if (resul) cout << oText << endl;
  else cout << kText << endl;
  return resul;
}

int main()
{
  WriteInfo();

  bool reg = false;
  while (!reg)
  {
    int user = GetUser();
    int passw = GetPassw();
    reg = CompareValues(user, passw);
  }
}