#include "stdafx.h"

using namespace std;
#include <iostream>
#include <iomanip>
#include <cmath>

int main()
{
	setlocale(LC_ALL, "");

	float x,y;

	cout << "Задание #1" << endl;
	cout << endl;
	cout << "X = ";
	cin >> x;

	if (x >= -10 && x < -8)
	{
		y = -3;
	}
	else if (x >= -8 && x < -3)
	{
		y = (x + 3) / 5 * 3;
	}
	else if (x >= -3 && x < 3)
	{
		y = -sqrt(3 * 3 - x * x);
	}
	else if (x >= 3 && x < 5)
	{
		y = x - 3;
	}
	else if (x >= 5 && x <= 8)
	{
		y = 3;
	}

	cout << "Y = " << fixed << setprecision(1) << y << endl;
	cout << endl;
	system("pause");
}