#include <iostream>
#include <vector>
using namespace std;

class point{
    float a, b;
public:
    point(){
        this->a=0;
        this->b=0;
    }
    point(float a, float b){
        this->a=a;
        this->b=b;
    }

    float getA() const
    {
        return this->a;
    }
    float getB() const
    {
        return this->b;
    }
};

vector<point> f(const vector<point> &vec, const point &a, const point &b)
{
    vector<point> vec2;
    for(const point &p : vec)
        {
            if(p.getA()>=a.getA() && p.getA() <=b.getA() && p.getB()>=b.getB() && p.getB() <= a.getB())
            {
                vec2.push_back(p);
            }
        }
    return vec2;
}

int main()
{
    vector<point> vec(10);
    for(int i=0; i<10; i++)
    {
        vec[i]=point(i,i);
    }

    point a(2,6);
    point b(5,3);

    vector<point> p = f(vec, point(2,6), point(5,3));
    for(const point &pp : p)
    {
        cout<<pp.getA()<<' '<<pp.getB()<<endl;
    }
    return 0;
}