Куча была повреждена. При выделении памяти

int Graph::MinLengthBetweenTwoGraph(int a, int b, StructXY * qwerty)
{
    StructXY * XY;
    XY = qwerty;
    StructGraphData * GraphDataBegun_1, * GraphDataBegun_2;
    GraphDataBegun_1 = CentralGraphData;
    GraphDataBegun_2 = CentralGraphData;
    while (GraphDataBegun_1->GraphNum != a)
        GraphDataBegun_1 = GraphDataBegun_1->NextGraph;
    while (GraphDataBegun_2->GraphNum != b)
        GraphDataBegun_2 = GraphDataBegun_2->NextGraph;
 
    int Lenc_sris_1 = 0, Lenc_sris_2 = 0;
    while (GraphDataBegun_1)
    {
        Lenc_sris_1++;
        GraphDataBegun_1 = GraphDataBegun_1->ThisGraph;
    }
    while (GraphDataBegun_2)
    {
        Lenc_sris_2++;
        GraphDataBegun_2 = GraphDataBegun_2->ThisGraph;
    }
 
    GraphDataBegun_1 = CentralGraphData;
    GraphDataBegun_2 = CentralGraphData;
    while (GraphDataBegun_1->GraphNum != a)
        GraphDataBegun_1 = GraphDataBegun_1->NextGraph;
    while (GraphDataBegun_2->GraphNum != b)
        GraphDataBegun_2 = GraphDataBegun_2->NextGraph;
 
    double * DlinaDoPoints = new double[Lenc_sris_1 * Lenc_sris_2];
    int * SpecPointX_1 = new int[Lenc_sris_1];
    int * SpecPointY_1 = new int[Lenc_sris_1];
    int * SpecPointX_2 = new int[Lenc_sris_2];
    int * SpecPointY_2 = new int[Lenc_sris_2];
    int VremPeremen = 0;
    //перебираем точки и вычисляем длины
    while (GraphDataBegun_1)
    {
        while (GraphDataBegun_2)
        {
            double Res = sqrt( (double)( (GraphDataBegun_1->X - GraphDataBegun_2->X) * (GraphDataBegun_1->X - GraphDataBegun_2->X) + (GraphDataBegun_1->Y - GraphDataBegun_2->Y) * (GraphDataBegun_1->Y - GraphDataBegun_2->Y) ) );
                DlinaDoPoints[VremPeremen] = Res;
                SpecPointX_1[VremPeremen] = GraphDataBegun_1->X;
                SpecPointY_1[VremPeremen] = GraphDataBegun_1->Y;
                SpecPointX_2[VremPeremen] = GraphDataBegun_2->X;
                SpecPointY_2[VremPeremen] = GraphDataBegun_2->Y;
                VremPeremen++;
            GraphDataBegun_2 = GraphDataBegun_2->ThisGraph;
        }
        GraphDataBegun_2 = CentralGraphData;
        while (GraphDataBegun_2->GraphNum != b)
            GraphDataBegun_2 = GraphDataBegun_2->NextGraph;
        GraphDataBegun_1 = GraphDataBegun_1->ThisGraph;
    }
    //отсев больших
    double MinTutInMass = 0;
    int GoodPeremen = 0;
    MinTutInMass = DlinaDoPoints[0];
    for (int i = 0; i < VremPeremen; i++)
    {
        if ( DlinaDoPoints[i] < MinTutInMass )
            MinTutInMass = DlinaDoPoints[i];
    }
    for (int i = 0; i < VremPeremen; i++)
    {
        if ( DlinaDoPoints[i] > MinTutInMass )
            DlinaDoPoints[i] = -1;
        else
            GoodPeremen++;
    }
 
    for (int i = 0; i < VremPeremen; i++)
    {
        if ( DlinaDoPoints[i] != -1)
        {
            XY->Lench = DlinaDoPoints[i];
            XY->X_1 = SpecPointX_1[i];
            XY->X_2 =SpecPointX_2[i];
            XY->Y_1 = SpecPointY_1[i];
            XY->Y_2 = SpecPointY_2[i];
            XY->NextXY = new StructXY;
            XY = XY->NextXY;
            XY->NextXY = NULL;
        }
    }
    XY = NULL;
 
    return 0;
}

double * DlinaDoPoints = new double[Lenc_sris_1 * Lenc_sris_2];
    int * SpecPointX_1 = new int[Lenc_sris_1 * Lenc_sris_2];
    int * SpecPointY_1 = new int[Lenc_sris_1 * Lenc_sris_2];
    int * SpecPointX_2 = new int[Lenc_sris_1 * Lenc_sris_2];
    int * SpecPointY_2 = new int[Lenc_sris_1 * Lenc_sris_2];