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

class Multiple
{
private:
        int begin, end, cnt2, cnt3;
public:
        Multiple(){begin=1; end=10; cnt2=0; cnt3=0;}
        Multiple(int b, int e){begin=b; end=e; cnt2=0; cnt3=0;}
        void checkMultiple();
        void print();
};

void Multiple::checkMultiple()
{
        cnt2=(end/2)-((begin-1)/2);
        cnt3=(end/3)-((begin-1)/3);
}

void Multiple::print()
{
        cout<<begin<<"~"<<end<<endl;
        cout<<"2의 배수 : "<<cnt2<<"개, 3의 배수 : "<<cnt3<<"개"<<endl;
}

void main()
{
        Multiple mul;
        mul.checkMultiple();
        mul.print();

        Multiple mul1(3,20);
        mul1.checkMultiple();
        mul1.print();
}