#include <iostream>

int main()
{
	int pin = 0;
	float money = 300.0f;
	float deposit = 0.0f;
	float withdrawal = 0.0f;
	std::cout<<"Write pin: "<<std::endl;
	if(std::cin >> pin && pin == 8765)
	{
		int option = 0;
		do
		{
			std::cout<<"1. Deposit"<<"\n";
			std::cout<<"2. Withdrawal"<<"\n";
			std::cout<<"3. Balance"<<"\n";
			std::cout<<"4. Quit"<<std::endl;
			std::cin >> option;
			switch(option)
			{
				case 1:
				std::cout<<"Input ammount: "<<std::endl;
				std::cin>>deposit;
				money += deposit;
				break;
				case 2:
				std::cout<<"Quantity to withdrawal: "<<std::endl;
				std::cin>>withdrawal;
				money -= withdrawal;
				break;
				case 3:
				std::cout<<"Balance: "<<money<<std::endl;
				break;
				default:
				break;
			}
		}
		while(std::cin.clear(), option != 4);
	}
	return 0;
}