using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine(f1(0.55));

            f2(10, 3, 4);

            Console.WriteLine();

            Console.WriteLine(f3(new double[]{1, 2, 3}, new double[]{1, 2, 3}));

        f4(new double[] { 1, 2, 3, 4, 5 });

        Console.WriteLine(f5(new double[] { 1, 3, 6, 8, 111, 112 }));

        f6(new double[,] { { 1, 2, 3, 4, 5, 6 }, { 2, 2, 3, 4, 5, 6 }, { 3, 2, 3, 4, 5, 6 } });

        f7(new double[,] { { 0, 2, 3, 0, 5, 6 }, { 0, 2, 3, 0, 5, 6 }, { 0, 2, 3, 0, 5, 6 } });

        f8(new double[] { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, new double[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 });

        f9(new double[,] { { 1, 2, 3, 4, 5, 6 }, { 2, 2, 3, 4, 5, 6 }, { 3, 2, 3, 4, 5, 6 } }, -10, -1000);

    }

    static double f1 (double x)

        {

            double result = 0;

            result = (1 / 7 + Math.Log(Math.Sqrt(x), Math.E)) * Math.Pow((Math.E), (Math.Sqrt(x - 2)));

            return result;

        }

​

        static void f2 (int N, double A, double B)

        {

            double delta = (B - A) / N;

            for (int i = 0; i < N; i++)

            {

                Console.WriteLine((i+1) + "  " + (A + i*delta) + "  " + f1(A + i*delta));

            }

        }

​

        static double f3 (double[] A, double[] B)

        {

            double P = 0;

            for (int i = 0; i < A.Length; i++)

                P += A[i] * B[i];

            return P;

        }

    static void f4 (double[] X)

        {

            int count = 0;

            double result = 0;

            for(int i = 0; i < X.Length; i++)

            {

                if(X[i] > 0 && Math.Sin(X[i]) <= 0)

                {

                    if (count == 0) result = X[i];

                    else result *= X[i];

                    count++;

                }

            }

            Console.WriteLine("Количество элементов: " + count);

            Console.WriteLine("Произведение: " + result);

        }

            static double f5 (double[] A)

        {

            double result = 0;

            for (int i = 1; i < A.Length; i++)

                if (result < Math.Abs(A[i] - A[i - 1]))

                    result = Math.Abs(A[i] - A[i - 1]);

            return result;

        }

            static void f6(double[,] A)

        {

            for (int i = 0; i < 6; i++)

                if (A[0,i] < A[1,i] && A[1,i] < A[2,i])

                    Console.WriteLine(i+1);

        }

    static byte[] f7(double[,] A)

        {

            byte[] C = new byte[A.GetLength(1)];

            double sum = 0;

            for (int i = 0; i < A.GetLength(1); i++)

            {

                bool flag = true;

                for (int j = 0; j < A.GetLength(0); j++)

                {

                    if (A[j, i] != 0) flag = false;

                    sum += A[j, i];

                }

                if (flag) C[i] = 0;

                else C[i] = 1;

            }

            Console.WriteLine("Сумма элементов: " + sum);

            return C;

        }

    static double[] f8(double[] C, double[] P)

        {

            double maxC = C[0];

            double minP = P[0];

            for(int i = 1; i < 10; i++)

            {

                if (maxC < C[i]) maxC = C[i];

                if (minP > P[i]) minP = P[i];

            }

            if(maxC < minP)

            {

                double[] X = new double[20];

                for(int i = 0; i < 10; i++)

                {

                    X[i] = C[i];

                    X[i + 10] = P[i];

                }

                return X;

            }

            return null;

        }

    static void f9( double[,] X, double Left, double Right)

        {

            int max = 0;

            double maxSum = double.MinValue;

            bool flag = true;

            for (int i = 0; i < X.GetLength(0); i++)

            {

                double sum = 0;

                for (int j = 0; j < X.GetLength(1); j++)

                {

                    sum += X[i, j];

                }

                if(flag)

                {

                    if (sum < Right && sum > Left)

                    {

                        if(maxSum < sum)

                        {

                            maxSum = sum;

                            max = i;

                        }

                    }

                    else

                    {

                        flag = false;

                        Console.Write("Строки с неподходящей суммой элементов: " + (i + 1));

                    }

                }

                else

                {

                    if (!(sum < Right && sum > Left))

                        Console.Write(", " + (i + 1));

                }

            }

            if (flag) Console.WriteLine("Строка с максимальной суммой: " + (max + 1));

        }

}