#include <algorithm>
#include <iostream>
#include <windows.h>

using namespace std;

double PCFreq = 0.0;
__int64 CounterStart = 0;

void StartCounter( )
{
    LARGE_INTEGER li;
    if ( !QueryPerformanceFrequency( &li ) )
        cout << "QueryPerformanceFrequency failed!\n";

    PCFreq = double( li.QuadPart ) / 1000.0;

    QueryPerformanceCounter( &li );
    CounterStart = li.QuadPart;
}
double GetCounter( )
{
    LARGE_INTEGER li;
    QueryPerformanceCounter( &li );
    return double( li.QuadPart - CounterStart ) / PCFreq;
}

const int sizeofbigdata = 209715200;


char * bigdata = new char[ sizeofbigdata ];
char * bigdata2 = new char[ sizeofbigdata ];


void check1( )
{
    memcpy( bigdata, bigdata2, sizeofbigdata );
}

void check2( )
{
    copy( bigdata2, bigdata2 + sizeofbigdata, bigdata );
}


int main( )
{
    int i ;

    while ( true )
    {
        i = 100;


        StartCounter( );
        while ( i-- )
        {
            check1( );
        }
        cout << GetCounter( ) << "\n";


        i = 100;
        StartCounter( );
        while ( i-- )
        {
            check2( );
        }
        cout << GetCounter( ) << "\n";

        system( "pause" );
    }
    return 0;
}