#include <iostream>
using namespace std;

class Bank{
	float amt;
	public:
	//Constructor Prototypes
	Bank(){amt=0;}
	Bank(float a){amt =a;}
	float getAmount(void){float a=amt;return a;}
	Bank operator- (const Bank&);

	friend Bank operator+ (const Bank&, const Bank&);
	
};




Bank Bank::operator-(const Bank& B){
	return(Bank(amt -B.amt));
}

Bank operator+(const Bank& B1, const Bank& B2){
	return( Bank(B1.amt + B2.amt));
}

int main(){
	Bank b1(100), b2(200), b3, b4;
	b3= b1 + b2;
	b4= b2-b1;
	cout<<b3.getAmount()<<"\n"<<b4.getAmount()<<endl;
}