/* CODING by ARTHUR  #include <iostream>
#include <string>
using namespace std;

int main()
{
  cout << "Hello nigga" << endl;
  string req;
  cin >> req;
  if (req == "kek") {
    cout << "YOU FUCKING NIGGA BRO!" << endl;
  }
  else {
   cout << "YOU DONT NIGGA" << endl;
  }
  system ("pause");
  return 0;
}

*/
/*
#include <iostream>
#include <string>

using namespace std;

int main()
{
	setlocale(LC_ALL, "RUSSIAN");
    string str;

    cout << "ââåäèòå âàøå èìÿ: ";
    getline(cin, str);

    cout << "Ïðèâåò, " << str << "! \n";
 	system("chcp 1251"); // èñïðàâëÿåì êàðàêóëè ïðè ââîäå äàííûõ
    return 0;
}

*/

// LAB #1
//#include <iostream>
//#include <math.h>
//using namespace std;
//
//int main()
//{
//	double PI,R,square;
//    PI = 3.14159;
//	cout << "Input length:" << endl;
//	cin >> R;
//	square = PI*pow(R,2);
//	cout << "Square: " << square << endl;
//	system("pause");
//    return 0;
//}


//LAB #2
//#include <iostream>
//#include <math.h>
//#include <conio.h>
//using namespace std;
//int main ()
//{
//int x1, y1, x2, y2;
//cout << "Enter coord x1: ";
//cin >> x1;
//cout << "Enret coord y1: ";
//cin >> y1;
//cout << "Enter coord x2: ";
//cin >> x2;
//cout << "Enter coord y2: ";
//cin >> y2;
//if (x1 == x2 || y1 == y2 || fabs(x1-y1) == fabs(x2-y2))
//cout << "You can! \n";
//else
//{
//cout << "You cannot move in 1 step. You can move into [" << x1 << ";" << y2 << "] to move to ["<< x2 << ";" << y2 <<"] \n";
//}
//getch ();
//return 0;
//
//}


//LAB #3
//
//#include <iostream>
//using namespace std;
//int main ()
//{
//	double a, b;
//	int x;
//
//	a = 1.3;
//	b = 10.23;
//
//	cout << "Enter the number: ";
//	cin >> x;
//
//	if (a < x && x <= b)
//	{
//		cout << "lie on the interval (1.3; 10.23]" << endl;
//	}
//	else
//	{
//		cout << "does not lie on the interval (1.3; 10.23]" <<endl;
//	}
//	system ("pause");
//	return 0;
//
//}

//LAB #4
//#include <iostream>
//#include <math.h>
//using namespace std;
//int main ()
//{
//	int x,y, e = 1;
//	double M;
//
//	cout << "Enter the number x: ";
//	cin >> x;
//	cout << "Enter the number y: ";
//	cin >> y;
//
//	M = (1.17 * log(sqrt(1 + pow(cos(y),2)))) / (pow(e,y) + pow(sin(x),2));
//
//	cout << M << endl;
//
//	system ("pause");
//	return 0;
//
//
//}

//LAB #2.1
#include <iostream>
#include <math.h>
using namespace std;
int main ()
{

}

//LAB #2.2
//#include <iostream>
//#include <math.h>
//using namespace std;
//int main ()
//{
//	double a, b, x, y, Max;
//	cout << "Input start point = ";
//	cin >> a;
//	cout << "Input finish point = ";
//	cin >> b;
//
//	Max = a*sin(a);
//
//	for (x = a; x <= b; x += 0.001)
//	{
//		y = x *sin(x);
//		if (y > Max)
//		{
//        Max = y;
//        }
//	}
//		cout << "Max result: " << Max << endl;
//		system ("pause");
//		return 0;
//}