void PQEnQueue( PQueue* q, int nKey, int nPrior )
{
    if( q->SizePQueue >= q->MaxSize )
    {
        printf( "ERROR: PQEnQueue\n" );
        return;
    }

    q->pTab[q->SizePQueue].nKey = nKey;
    q->pTab[q->SizePQueue].nPrior = nPrior;

    UpdateUp( q, 0, q->SizePQueue );
    q->SizePQueue++;

}