using System;

public class Program

{

    public static void Main()

    {

        double [] S = new double [6];

        int [] R = new int [6];

        int [] V = new int [6];

        double pi = Math.PI ; Console.WriteLine("......пи = "+"(0:F2)",+pi);

        Console.Write("A = ") ; int A = int.Parse(Console.ReadLine()); 

        Console.Write("B = ") ; int B = int.Parse(Console.ReadLine()); 

        S[0] = A*B ; Console.WriteLine("......=> S[0] = "+"{0:F2}", +S[0]);

for (int i = 1; i <=4; i++)

    {   Console.Write("R["+i+"] = ") ; int N = int.Parse(Console.ReadLine()); R[i] = N;

        Console.Write("V["+i+"] = ") ; int M = int.Parse(Console.ReadLine()); V[i] = M;

        if (V[i] == 0) { S[i] =            pi * R[i] * R[i] / 4; }

   else if (V[i] == 1) { S[i] =R[i] * R[i]-pi * R[i] * R[i] / 4; }

        Console.WriteLine(".........=> S["+i+"]) = "+"{0:F2}", +S[i]);

    }   S[5] = S[0] - S[1] - S[2] - S[3] - S[4]; Console.Write("...................=> ");

        Console.Write("S[] = S[0] - S[1] - S[2] - S[3] - S[4] = "+"{0:F2}", +S[5]);

    }}

​