#include<iostream>
using namespace std;
class base
{public:
base(){}
virtual ~base(){}
virtual void calculation(int a,int b,float m,float n,int c){};
virtual void calculation1(float m,float n,int a,int b,int c,float
critical,int g){};
virtual void calculation2(float m,float n,int a,int b,int c,float
critical1,float critical2,int q1,int e1){};
virtual int check(int a,int b,int c,float critical){return 3;};
virtual void only_endpoints(int a,int b,int c,float m,float n){};
};
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