async function increaseSalary() {
	let newUsersSalary = 0;
	let success = 0;
	try {
		const users = await api.getEmployees();
		const middleSalary = users.reduce((acc, item) => (acc += item.salary), 0) / users.length;
		for (let user of users) {
			try {
				const newUser = await api.setEmployeeSalary(user.id, user.salary < middleSalary ? user.salary * 1.2 : user.salary * 1.1);
				await api.notifyEmployee(newUser.id, `Hello, ${newUser.name}! Congratulations, your new salary is ${newUser.salary}!`);
				newUsersSalary += newUser.salary;
				success += 1;
			} catch (e) {
				api.notifyAdmin(e);
			}
		}
	} catch (e) {
		api.notifyAdmin(e);
	} finally {
		api.sendBudgetToAccounting(newUsersSalary);
		return new Promise((res) => res(success));
	}
}