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#include <iostream>
#include <cmath>
#include<vector>
#include<algorithm>

using namespace std;

struct PositionVector {

double x, y;
PositionVector(){x=0;y=0;};

PositionVector(double a, double b)
{
 x=a;
 y=b;
};

PositionVector(const PositionVector& v1)
{
   x=v1.x;
   y=v1.y;
};

double norm() const
{
    return sqrt(x*x+y*y);
};

void print() const
{
    cout<<"koordinate: "<<x<<","<<y<<endl;
    cout<<"norma: "<<norm()<<endl;
};


};

bool sort1(PositionVector v1, PositionVector v2)
{
   if(v1.norm()>v2.norm())
   {return true;}
   else
   {
return false;
   }
}


int main()
{

PositionVector v[5];
v[0]=PositionVector (2.5, 3.6);
v[1]=PositionVector (5.5, 3.6);
v[2]=PositionVector (4.4, 4.4);
v[3]=PositionVector (10.0, 0.1);
v[4]=PositionVector (0.0, 0.0);
for(PositionVector i:v)
    i.print();

sort(v,v+5,sort1);
for(PositionVector i:v)
    i.print();
}