Здравейте имам въпрос към Task 3 - Sales.

Задачата : https://snipboard.io/As0apU.jpg.

Проблемът ми е следния : Всеки път , когато въведа нова стойност и инсъртвам в мапа става нещо странно и ми чисти всичко в него. Надявам се, че някой може да помогне !

​
#include <iostream>
#include <sstream>

#include <unordered_map>
#include <stack>

class Sale {

	std::unordered_map <std::string, std::pair<double, int>> x;
	std::string city, product; double price; int quantity;

	std::stack<std::string> way;
public :

	Sale(std::string city, std::string product, double price, int quantity) :
		city(city), product(product), price(price), quantity(quantity) {}

	void Input(void)
	{
		way.push(city);
		x.insert(std::pair<std::string, std::pair<double, int>>(city, { price, quantity }));
	}

	void Output(void)
	{
		for (std::unordered_map <std::string, std::pair<double, int>>::iterator a = x.begin(); a !=
			x.end(); ++a)
		{
			std::cout << x.find(way.top())->first << " -> " << x.find(way.top())->second.first * x.find(way.top())->second.second << std::endl;

			way.pop();
		}
	}

	Sale() {}
};

int main()
{

	int size, quantity; std::string city, product; double price;

	
	std::unordered_map <std::string, std::pair<double, int>> x;

	std::cin >> size; Sale result;
	
	for (int i = 0; i < size; i++)
	{
		std::cin >> city >> product >> price >> quantity;

		Sale x(city, product, price, quantity);
		x.Input();
	}
	
	result.Output();
}

​