// Written by TheDarkness

// Compile with;
//      g++ -Wall -O2 gpr.cpp -o gpr

#include <iostream>
#include <string>
#include <sstream>

using namespace std;

string getCS( string* url )
{
        string* google_hash =
                new string( "Mining PageRank is AGAINST GOOGLE'S TERMS OF SERVICE. Yes, I'm talking to you, scammer." );
        int key = 16909125;
        for( unsigned int i = 0; i < url->length(); ++i )
        {
                key = key ^ (int)google_hash->at( i % google_hash->length() ) ^ (int)url->at( i );

                // BEWARE, possibly non portable, depends on signed/unsigned padding,
                // one's complement, two's complement, etc.
                key = ((unsigned)key)>>23|((unsigned)key)<<9;

        }

        delete google_hash;

        ostringstream oss( "8" );
        oss.setf( ios::hex, ios::basefield );
        oss.width( 2 );
        oss.fill( '0' );
        oss << ( ((unsigned)key)>>(8&255) ) << (key&255);

        return oss.str();
}

int main( void )
{
        string* str = new string( "www.yahoo.com" );
        cout << getCS( str ) << endl;
        (*str) = "www.google.com";
        cout << getCS( str ) << endl;
        delete str;
        return 0;

}