#include <iostream>

class st4vector
{
  public:
    st4vector(int indim);           //standartinit
    ~st4vector();                     // destructor
 
    int dim;
    double* t;
    double* x;
    double* y;
    double* z;
};

using namespace std;
 
int main()
{
st4vector velocity(200);
 
cout << velocity.x[0] << endl;
 
return 0;
}

st4vector::st4vector(int indim) {
    dim=indim;
 
    t=new double [dim];
    x=new double [dim];
    y=new double [dim];
    z=new double [dim];
 
    for(int i=0;i<dim;i++) {
        t[i]=0;
        x[i]=0;
        y[i]=0;
        z[i]=0;
    }
}
 
st4vector::~st4vector()
{
  if(t){
    delete [] t;
    delete [] x;
    delete [] y;
    delete [] z;
 
    t=0;
    x=0;
    y=0;
    z=0;
  }
}