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Cod sursa(job #439599)
/*
* File: main.cpp
* Author: VirtualDemon
*
* Created on April 11, 2010, 1:22 PM
*/
#include <vector>
#include <cstdlib>
#include <fstream>
#include <iterator>
#define Nmax 500001
/*
*
*/
using namespace std;
int v[Nmax], v2[Nmax];
inline void MegaSort( int left, int right )
{
if( left < right )
{
int i, j, k, middle=left+(right-left)/2;
MegaSort( left, middle );
MegaSort( middle+1, right );
for( k=0, i=left, j=middle+1; i <= middle && j <= right; ++k )
{
if( v[i] <= v[j] )
v2[k]=v[i], ++i;
else v2[k]=v[j], ++j;
}
for( ; i <= middle; ++i, ++k )
v2[k]=v[i];
for( ; j <= right; ++j, ++k )
v2[k]=v[j];
for( i=left, k=0; i <= right; ++i, ++k )
v[i]=v2[k];
}
}
int main( void )
{
int N;
ifstream in( "algsort.in" );
in>>N;
copy( istream_iterator<int>(in), istream_iterator<int>(), v );
MegaSort( 0, N-1 );
ofstream out( "algsort.out" );
copy( v, v+N, ostream_iterator<int>( out, " " ) );
out<<'\n';
return EXIT_SUCCESS;
}