diff --git a/Seminars/Seminar01/Self/Task01/Program.cs b/Seminars/Seminar01/Self/Task01/Program.cs
index 3671ed6..1d3616e 100644
--- a/Seminars/Seminar01/Self/Task01/Program.cs
+++ b/Seminars/Seminar01/Self/Task01/Program.cs
@@ -1 +1,15 @@
 // Your code here!
+using System;
+class Program
+{
+    static void Main()
+    {
+        string firstname = Console.ReadLine();
+        string lastname= Console.ReadLine();
+        string secondname = Console.ReadLine();
+
+        Console.WriteLine($"Фамилия: {firstname}");
+        Console.WriteLine($"Имя: {lastname}");
+        Console.WriteLine($"Отчество: {secondname}");
+    }
+}
\ No newline at end of file
diff --git a/Seminars/Seminar01/Self/Task02/Program.cs b/Seminars/Seminar01/Self/Task02/Program.cs
index 3671ed6..8700f49 100644
--- a/Seminars/Seminar01/Self/Task02/Program.cs
+++ b/Seminars/Seminar01/Self/Task02/Program.cs
@@ -1 +1,13 @@
 // Your code here!
+using System;
+class Program
+{
+    static void Main()
+    {
+        string firstname = Console.ReadLine();
+        string lastname= Console.ReadLine();
+        string secondname = Console.ReadLine();
+
+        Console.WriteLine($"{firstname} {lastname} {secondname}");
+    }
+}
\ No newline at end of file
diff --git a/Seminars/Seminar01/Self/Task03/Program.cs b/Seminars/Seminar01/Self/Task03/Program.cs
index 3671ed6..49dc3d4 100644
--- a/Seminars/Seminar01/Self/Task03/Program.cs
+++ b/Seminars/Seminar01/Self/Task03/Program.cs
@@ -1 +1,11 @@
 // Your code here!
+using System;
+class Program
+{
+    static void Main()
+    {
+        string firstname = Console.ReadLine();
+
+        Console.WriteLine($"Привет, {firstname}!");
+    }
+}
\ No newline at end of file
diff --git a/Seminars/Seminar01/Self/Task04/Program.cs b/Seminars/Seminar01/Self/Task04/Program.cs
index 3671ed6..f86a957 100644
--- a/Seminars/Seminar01/Self/Task04/Program.cs
+++ b/Seminars/Seminar01/Self/Task04/Program.cs
@@ -1 +1,11 @@
 // Your code here!
+using System;
+class Program
+{
+    static void Main()
+    {
+        Console.BackgroundColor = ConsoleColor.Green;
+        Console.ForegroundColor = ConsoleColor.Red;
+        Console.WriteLine("floppABOBA");
+    }
+}
\ No newline at end of file
diff --git a/Seminars/Seminar01/Self/Task05/Program.cs b/Seminars/Seminar01/Self/Task05/Program.cs
index 3671ed6..68a1be6 100644
--- a/Seminars/Seminar01/Self/Task05/Program.cs
+++ b/Seminars/Seminar01/Self/Task05/Program.cs
@@ -1 +1,14 @@
 // Your code here!
+using System;
+class Program
+{
+    static void Main()
+    {
+        float u = Convert.ToInt32(Console.ReadLine());
+        float r = Convert.ToInt32(Console.ReadLine());
+        float i = u / r;
+        float p = (u * u) / r;
+        Console.WriteLine("I = {0}", i);
+        Console.WriteLine("P = {0}", p);
+    }
+}
\ No newline at end of file
diff --git a/Seminars/Seminar01/Self/Task06/Program.cs b/Seminars/Seminar01/Self/Task06/Program.cs
index 83fa4f4..5cfacdc 100644
--- a/Seminars/Seminar01/Self/Task06/Program.cs
+++ b/Seminars/Seminar01/Self/Task06/Program.cs
@@ -1,2 +1,11 @@
-// See https://aka.ms/new-console-template for more information
-Console.WriteLine("Hello, World!");
+using System;
+class Program
+{
+    static void Main()
+    {
+        double a = Convert.ToDouble(Console.ReadLine());
+        double b = Convert.ToDouble(Console.ReadLine());
+
+        Console.WriteLine(Math.Sqrt((a * a) + (b * b)));
+    }
+}
\ No newline at end of file
diff --git a/Seminars/Seminar03/Self/Task01/Program.cs b/Seminars/Seminar03/Self/Task01/Program.cs
new file mode 100644
index 0000000..a475c67
--- /dev/null
+++ b/Seminars/Seminar03/Self/Task01/Program.cs
@@ -0,0 +1,15 @@
+using System;
+class Program
+{
+    public static void Main()
+    {
+        int n = Convert.ToInt32(Console.ReadLine());
+        double.TryParse(Console.ReadLine(), out double l);
+
+        if (1 <= n && n < 11 && n != 2 && l > 0 && Math.Tan(Math.PI / n) > 0)
+        {
+            double s = ((n * l) * (n * l)) / (4 * Math.Tan(Math.PI / n));
+            Console.WriteLine(s);
+        }
+    }
+}
\ No newline at end of file
diff --git a/Seminars/Seminar03/Self/Task02/Program.cs b/Seminars/Seminar03/Self/Task02/Program.cs
new file mode 100644
index 0000000..eb21179
--- /dev/null
+++ b/Seminars/Seminar03/Self/Task02/Program.cs
@@ -0,0 +1,35 @@
+using System;
+class Aboba
+{
+    public static void Main()
+    {
+        double.TryParse(Console.ReadLine(), out double x);
+        double.TryParse(Console.ReadLine(), out double y);
+        string a = "Точка внутри области";
+        string b = "Точка на границе области";
+        string c = "Точка не принадлежит области";
+
+        if (y < 0)
+        {
+            Console.WriteLine(c);
+        }
+        else
+        {
+            if ((x * x + y * y) > 1 && (x * x + y * y) < 4)
+            {
+                Console.WriteLine(a);
+            }
+            else
+            {
+                if ((x * x + y * y) == 1 || (x * x + y * y) == 4)
+                {
+                    Console.WriteLine(b);
+                }
+                else
+                {
+                    Console.WriteLine(c);
+                }
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/Seminars/Seminar03/Self/Task03/Program.cs b/Seminars/Seminar03/Self/Task03/Program.cs
new file mode 100644
index 0000000..bef10a8
--- /dev/null
+++ b/Seminars/Seminar03/Self/Task03/Program.cs
@@ -0,0 +1,51 @@
+using System;
+class Program
+{
+    public static void Main()
+    {
+        double.TryParse(Console.ReadLine(), out double x);
+        double.TryParse(Console.ReadLine(), out double y);
+
+        string a = "Точка внутри области";
+        string b = "Точка на границе области";
+        string c = "Точка не принадлежит области";
+
+        if (y < 0)
+        {
+            if (x * x + y * y < 1)
+            {
+                Console.WriteLine(a);
+            }
+            else
+            {
+                if (x * x + y * y == 1)
+                {
+                    Console.WriteLine(b);
+                }
+                else
+                {
+                    Console.WriteLine(c);
+                }
+
+            }
+        }
+        else
+        {
+            if (x * x + y * y < 4)
+            {
+                Console.WriteLine(a);
+            }
+            else
+            {
+                if (x * x + y * y == 4)
+                {
+                    Console.WriteLine(b);
+                }
+                else
+                {
+                    Console.WriteLine(c);
+                }
+            }
+        }
+    }
+}
diff --git a/Seminars/Seminar03/Self/Task04/Program.cs b/Seminars/Seminar03/Self/Task04/Program.cs
new file mode 100644
index 0000000..7097f2d
--- /dev/null
+++ b/Seminars/Seminar03/Self/Task04/Program.cs
@@ -0,0 +1,30 @@
+using System;
+class Program
+{
+    public static void Main()
+    {
+        double.TryParse(Console.ReadLine(), out double x);
+        double.TryParse(Console.ReadLine(), out double y);
+        Console.WriteLine(x);
+        Console.WriteLine(y);
+
+        if (x < y)
+        {
+            double f1 = Math.Sin(x) + (Math.Cos(y) * Math.Cos(y));
+            Console.WriteLine(f1);
+        }
+        else
+        {
+            if (x == y)
+            {
+                double f2 = Math.Log(x);
+                Console.WriteLine(f2);
+            }
+            else
+            {
+                double f3 = Math.Sin(x * x) + (Math.Cos(y));
+                Console.WriteLine(f3);
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/Seminars/Seminar03/Self/Task05/Program.cs b/Seminars/Seminar03/Self/Task05/Program.cs
new file mode 100644
index 0000000..39fd751
--- /dev/null
+++ b/Seminars/Seminar03/Self/Task05/Program.cs
@@ -0,0 +1,51 @@
+using System.Data;
+using System;
+class Program
+{
+    public static void Main()
+    {
+        double.TryParse(Console.ReadLine(), out double a);
+        double.TryParse(Console.ReadLine(), out double b);
+        double.TryParse(Console.ReadLine(), out double c);
+
+        Console.WriteLine($"{a}x^2 + {b}x + {c}");
+
+        if (a == 0)
+        {
+            double x1 = -c / b;
+            Console.WriteLine($"x = {x1}");
+        }
+        else
+        {
+            if (b == 0)
+            {
+                double x2 = Math.Sqrt(-c / a);
+                Console.WriteLine($"x1 = {x2}");
+                Console.WriteLine($"x2 = -{x2}");
+            }
+            else
+            {
+                double d = b * b - 4 * a * c;
+                if (d < 0)
+                {
+                    Console.WriteLine("Нет действительных корней");
+                }
+                else
+                {
+                    if (d == 0)
+                    {
+                        double x3 = -b / (2 * a);
+                        Console.WriteLine($"x = {x3}");
+                    }
+                    else
+                    {
+                        double x4 = (-b + Math.Sqrt(d)) / (2 * a);
+                        double x5 = (-b - Math.Sqrt(d)) / (2 * a);
+                        Console.WriteLine($"x1 = {x4}");
+                        Console.WriteLine($"x2 = {x5}");
+                    }
+                }
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/Seminars/Seminar04/Self/Task01/Program1.cs b/Seminars/Seminar04/Self/Task01/Program1.cs
new file mode 100644
index 0000000..8abf6b1
--- /dev/null
+++ b/Seminars/Seminar04/Self/Task01/Program1.cs
@@ -0,0 +1,25 @@
+using System;
+class Program1
+{
+    static void Main()
+    {
+        string str = Console.ReadLine();
+        char a = str[0];
+        switch (a)
+        {
+            case >='0' and <='9':
+                Console.WriteLine($"{a} 100");
+                break;
+            case >='A' and <='Z':
+                Console.WriteLine($"{a} 200");
+                break;
+            case >='a' and <='z':
+                Console.WriteLine($"{a} 300");
+                break;
+
+            default:
+                Console.WriteLine($"{a} 400");
+                break;
+        }
+    }
+}
\ No newline at end of file
diff --git a/Seminars/Seminar04/Self/Task02/Program.cs b/Seminars/Seminar04/Self/Task02/Program.cs
new file mode 100644
index 0000000..c99f3cd
--- /dev/null
+++ b/Seminars/Seminar04/Self/Task02/Program.cs
@@ -0,0 +1,52 @@
+using System;
+class Program
+{
+    static void Main(string[] args)
+    {
+        string str = Console.ReadLine();
+
+        switch (str)
+        {
+            case "January" or "Январь" or "january" or "январь":
+                Console.WriteLine("1");
+                break;
+            case "February" or "Февраль" or "february" or "февраль":
+                Console.WriteLine("2");
+                break;
+            case "March" or "Март" or "march" or "март":
+                Console.WriteLine("3");
+                break;
+            case "April" or "Апрель" or "april" or "апрель":
+                Console.WriteLine("4");
+                break;
+            case "May" or "Май" or "may" or "май":
+                Console.WriteLine("5");
+                break;
+            case "June" or "Июнь" or "june" or "июнь":
+                Console.WriteLine("6");
+                break;
+            case "July" or "Июль" or "july" or "июль":
+                Console.WriteLine("7");
+                break;
+            case "August" or "Август" or "august" or "август":
+                Console.WriteLine("8");
+                break;
+            case "September" or "Сентябрь" or "september" or "сентябрь":
+                Console.WriteLine("9");
+                break;
+            case "October" or "Октябрь" or "october" or "октябрь":
+                Console.WriteLine("10");
+                break;
+            case "November" or "Ноябрь" or "november" or "ноябрь":
+                Console.WriteLine("11");
+                break;
+            case "December" or "Декабрь" or "december" or "декабрь":
+                Console.WriteLine("12");
+                break;
+
+            default:
+                Console.WriteLine("В году такой месяц отстутствует.");
+                break;
+        }
+    }
+}
\ No newline at end of file
diff --git a/Seminars/Seminar04/Self/Task03/Program.cs b/Seminars/Seminar04/Self/Task03/Program.cs
new file mode 100644
index 0000000..967d2b3
--- /dev/null
+++ b/Seminars/Seminar04/Self/Task03/Program.cs
@@ -0,0 +1,40 @@
+using System;
+class Program
+{
+    public static void Main()
+    {
+        Console.Write("Введите код операции: ");
+        int x = Convert.ToInt32(Console.ReadLine());
+        Console.Write("Введите A: ");
+        double a = Convert.ToDouble(Console.ReadLine());
+        Console.Write("Введите B: ");
+        double b = Convert.ToDouble(Console.ReadLine());
+
+        if (b != 0 && x <= 4 && x >= 1)
+        {
+            switch (x)
+            {
+                case 1:
+                double s = a + b;
+                Console.WriteLine($"{a} + {b} = {s}");
+                break;
+
+                case 2:
+                double q = a - b;
+                Console.WriteLine($"{a} - {b} = {q}");
+                break;
+
+                case 3:
+                double p = a * b;
+                Console.WriteLine($"{a} * {b} = {p}");
+                break;
+
+                case 4:
+                double l = a / b;
+                Console.WriteLine($"{a} / {b} = {l}");
+                break;
+            }
+        }
+        else {Console.WriteLine("Error!");}
+    }
+}
diff --git a/Seminars/Seminar04/Self/Task04/Program.cs b/Seminars/Seminar04/Self/Task04/Program.cs
new file mode 100644
index 0000000..0eddd50
--- /dev/null
+++ b/Seminars/Seminar04/Self/Task04/Program.cs
@@ -0,0 +1,55 @@
+using System.Runtime.Serialization;
+using System.Runtime.Intrinsics.X86;
+using Microsoft.VisualBasic;
+using System;
+class Program
+{
+    static void Main(string[] args)
+    {
+        Console.Write("Ввод: ");
+        string str = Console.ReadLine();
+        string[] strings = str.Split(' ');
+        if (strings.Length != 3)
+        {
+            Console.WriteLine("Переполнение");
+        }
+        else
+        {
+            string a = strings[0];
+            string b = strings[2];
+            char op = Convert.ToChar(strings[1]);
+
+            switch(op)
+            {
+                case '+':
+                    double.TryParse(a, out double aa);
+                    double.TryParse(b, out double bb);
+                    Console.Write("Вывод: ");
+                    Console.WriteLine(aa + bb);
+                    break;
+                case '-':
+                    double.TryParse(a, out double aaa);
+                    double.TryParse(b, out double bbb);
+                    Console.Write("Вывод: ");
+                    Console.WriteLine(aaa - bbb);
+                    break;
+                case '*':
+                    double.TryParse(a, out double a1);
+                    double.TryParse(b, out double b1);
+                    Console.Write("Вывод: ");
+                    Console.WriteLine(a1 * b1);
+                    break;
+                case '/':
+                    double.TryParse(a, out double a2);
+                    double.TryParse(b, out double b2);
+                    Console.Write("Вывод: ");
+                    Console.WriteLine(a2 / b2);
+                    break;
+
+                default:
+                Console.WriteLine("Недопустимая операция");
+                break;
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/Seminars/Seminar05/Self/Self01/Program.cs b/Seminars/Seminar05/Self/Self01/Program.cs
index db1541a..8543836 100644
--- a/Seminars/Seminar05/Self/Self01/Program.cs
+++ b/Seminars/Seminar05/Self/Self01/Program.cs
@@ -1 +1,29 @@
 // Ваше решение.
+using System;
+class Aboba
+{
+    public static void Main()
+    {
+        string a = "Число кратно 2 и 3";
+        string b = "Число не соответствует условию";
+        int number = 0;
+        do
+        {
+            if (number == 20)
+            {
+                number++;
+            }
+            else if (number % 2 == 0 && number % 3 == 0)
+                {
+                    Console.WriteLine($"{number} - {a}");
+                    number++;
+                }
+                else
+                {
+                    Console.WriteLine($"{number} - {b}");
+                    number++;
+                }
+
+        } while(number <= 50);
+    }
+}
\ No newline at end of file
diff --git a/Seminars/Seminar05/Self/Self02/Program.cs b/Seminars/Seminar05/Self/Self02/Program.cs
index db1541a..238f104 100644
--- a/Seminars/Seminar05/Self/Self02/Program.cs
+++ b/Seminars/Seminar05/Self/Self02/Program.cs
@@ -1 +1,34 @@
-// Ваше решение.
+using System;
+// Ваше решение.
+class Program
+{
+    static void Main(string[] args)
+    {
+        int count_int = 0;
+        int count_double = 0;
+        int count_oth = 0;
+
+        string s = Console.ReadLine();
+        do
+        {
+            int.TryParse(s, out int a);
+            double.TryParse(s, out double b);
+            if (a != 0  || s == "0")
+            {
+                count_int += 1;
+            }
+            else if (b != 0)
+            {
+                count_double += 1;
+            }
+            else
+            {
+                count_oth += 1;
+            }
+            s = Console.ReadLine();
+        } while (s != "0");
+        Console.WriteLine($"Количество int: {count_int}");
+        Console.WriteLine($"Количество double: {count_double}");
+        Console.WriteLine($"Количество нечисловых: {count_oth}");
+    }
+}
\ No newline at end of file
diff --git a/Seminars/Seminar05/Self/Self03/Program.cs b/Seminars/Seminar05/Self/Self03/Program.cs
index db1541a..7137e39 100644
--- a/Seminars/Seminar05/Self/Self03/Program.cs
+++ b/Seminars/Seminar05/Self/Self03/Program.cs
@@ -1 +1,25 @@
 // Ваше решение.
+using System;
+class Program
+{
+    public static void Main()
+    {
+        double.TryParse(Console.ReadLine(), out double a);
+        int.TryParse(Console.ReadLine(), out int n);
+        double summa_pr = 0;
+        double x = 0;
+        double x1 = 0;
+        double y1 = 0;
+        double plus = a / n;
+
+        while (x < a)
+        {
+            x1 += plus;
+            y1 = x1 * x1;
+            summa_pr += (x1 - x) * y1;
+            x += plus;
+        }
+
+        Console.WriteLine($"Площадь: {summa_pr}");
+    }
+}
\ No newline at end of file
diff --git a/Seminars/Seminar05/Self/Self04/Program.cs b/Seminars/Seminar05/Self/Self04/Program.cs
index db1541a..884a184 100644
--- a/Seminars/Seminar05/Self/Self04/Program.cs
+++ b/Seminars/Seminar05/Self/Self04/Program.cs
@@ -1 +1,22 @@
 // Ваше решение.
+using System;
+class Program
+{
+    public static void Main()
+    {
+        double a = 1;
+        double b = 2;
+        double c = 3;
+        double summa = 0;
+        double current = 1 / (a * b * c);
+        while (current > double.Epsilon)
+        {
+            summa += current;
+            a += 1;
+            b += 1;
+            c += 1;
+            current = 1 / (a * b * c);
+        }
+        Console.WriteLine(summa);
+    }
+}
\ No newline at end of file
diff --git a/Seminars/Seminar05/Self/Self05/Program.cs b/Seminars/Seminar05/Self/Self05/Program.cs
index db1541a..1ada9e5 100644
--- a/Seminars/Seminar05/Self/Self05/Program.cs
+++ b/Seminars/Seminar05/Self/Self05/Program.cs
@@ -1 +1,19 @@
 // Ваше решение.
+using System;
+class Program
+{
+    public static void Main()
+    {
+        int.TryParse(Console.ReadLine(), out int k);
+        int k1 = 1;
+        double summa = 0;
+        while (k1 <= k)
+        {
+            summa += 1.0 / k1;
+            k1 += 1;
+        }
+        string s = string.Format("{0:F4}", summa);
+        Console.WriteLine(s);
+        
+    }
+}
\ No newline at end of file
diff --git a/Seminars/Seminar05/Self/Self06/Program.cs b/Seminars/Seminar05/Self/Self06/Program.cs
index db1541a..f0ef430 100644
--- a/Seminars/Seminar05/Self/Self06/Program.cs
+++ b/Seminars/Seminar05/Self/Self06/Program.cs
@@ -1 +1,14 @@
 // Ваше решение.
+using System;
+class Program
+{
+    public static void Main()
+    {
+        int n = 111;
+        while (n <= 999)
+        {
+            Console.WriteLine(n);
+            n += 111;
+        }
+    }
+}
\ No newline at end of file
diff --git a/Seminars/Seminar05/Self/Self07/Program.cs b/Seminars/Seminar05/Self/Self07/Program.cs
index db1541a..73efb9a 100644
--- a/Seminars/Seminar05/Self/Self07/Program.cs
+++ b/Seminars/Seminar05/Self/Self07/Program.cs
@@ -1 +1,28 @@
 // Ваше решение.
+using System;
+class Program
+{
+    public static void Main()
+    {
+        int.TryParse(Console.ReadLine(), out int n);
+        string str_n = Convert.ToString(n);
+        int i = str_n.Length - 1;
+        bool f = false;
+        string new_s = "";
+        while (i >= 0)
+        {
+            if (str_n[i] == '0' && f == false)
+            {
+                i -= 1;
+                continue;
+            }
+            else
+            {
+                f = true;
+                new_s += str_n[i];
+            }
+            i -= 1;
+        }
+        Console.WriteLine($"{n} -> {new_s}");
+    }
+}
\ No newline at end of file
diff --git a/Seminars/Seminar05/Self/Self08/Program.cs b/Seminars/Seminar05/Self/Self08/Program.cs
index db1541a..e6953ff 100644
--- a/Seminars/Seminar05/Self/Self08/Program.cs
+++ b/Seminars/Seminar05/Self/Self08/Program.cs
@@ -1 +1,37 @@
 // Ваше решение.
+using System;
+class Program
+{
+    public static void Main()
+    {
+        int.TryParse(Console.ReadLine(), out int n);
+        int.TryParse(Console.ReadLine(), out int k);
+        string str_n = Convert.ToString(n);
+        string answer = "";
+        if (k == 0 || k > str_n.Length)
+        {
+            while (k == 0 || k > str_n.Length)
+            {   
+                Console.WriteLine("Некорректный ввод K!");
+                k = int.Parse(Console.ReadLine());
+            }
+            int i = 0;
+            while (i < k)
+            {
+                answer += str_n[i];
+                i += 1;
+            }
+            Console.WriteLine(answer);
+        }
+        else
+        {
+            int i = 0;
+            while (i < k)
+            {
+                answer += str_n[i];
+                i += 1;
+            }
+            Console.WriteLine(answer);
+        }
+    }
+}
\ No newline at end of file
diff --git a/Seminars/Seminar05/Self/Self09/Program.cs b/Seminars/Seminar05/Self/Self09/Program.cs
index db1541a..2dee94a 100644
--- a/Seminars/Seminar05/Self/Self09/Program.cs
+++ b/Seminars/Seminar05/Self/Self09/Program.cs
@@ -1 +1,19 @@
 // Ваше решение.
+using System;
+class Program
+{
+    public static void Main()
+    {
+        double.TryParse(Console.ReadLine(), out double x);
+        double.TryParse(Console.ReadLine(), out double y);
+        
+        if (((x * x + y * y <= 4) && (y <= 0.5 * x) && (y >= 0)) || ((x * x + y * y <= 4) && (y <= 0) && (x >= 0)))
+        {
+            Console.WriteLine("true");
+        }
+        else
+        {
+            Console.WriteLine("false");
+        }
+    }
+}
\ No newline at end of file
diff --git a/Seminars/Seminar06/Self/Self01/Program.cs b/Seminars/Seminar06/Self/Self01/Program.cs
index db1541a..afee6a7 100644
--- a/Seminars/Seminar06/Self/Self01/Program.cs
+++ b/Seminars/Seminar06/Self/Self01/Program.cs
@@ -1 +1,19 @@
-// Ваше решение.
+using System;
+class Program
+{
+    public static void Main()
+    {
+        bool p = false;
+        bool q = false;
+        do
+        {
+            do
+            {
+                bool F = !(p & q) & !(p | !q);
+                Console.WriteLine($"p = {p} q = {q} F = {F}");
+                q = !q;
+            } while (q);
+            p = !p;
+        } while (p);
+    }
+}
diff --git a/Seminars/Seminar06/Self/Self02/Program.cs b/Seminars/Seminar06/Self/Self02/Program.cs
index db1541a..a98b8ea 100644
--- a/Seminars/Seminar06/Self/Self02/Program.cs
+++ b/Seminars/Seminar06/Self/Self02/Program.cs
@@ -1 +1,25 @@
-// Ваше решение.
+using System;
+class Program
+{
+    public static void Main()
+    {
+        bool a = false;
+        bool b = false;
+        bool c = false;
+        Console.WriteLine("a\tb\tc\tF");
+        do
+        {
+            do
+            {
+                do
+                {
+                    bool F = !(a || b && c) || a;
+                    Console.WriteLine($"{a}\t{b}\t{c}\t{F}");
+                    c = !c;
+                } while (c);
+                b = !b;
+            } while (b);
+            a = !a;
+        } while (a);
+    }
+}
\ No newline at end of file
diff --git a/Seminars/Seminar06/Self/Self03/Program.cs b/Seminars/Seminar06/Self/Self03/Program.cs
index db1541a..a2cff72 100644
--- a/Seminars/Seminar06/Self/Self03/Program.cs
+++ b/Seminars/Seminar06/Self/Self03/Program.cs
@@ -1 +1,42 @@
-// Ваше решение.
+using System;
+class Program
+{
+    public static void Main()
+    {
+        int n1 = 2000;
+        int n2 = 3000;
+        string n_str;
+
+        while (n1 <= n2)
+        {
+            n_str = Convert.ToString(n1);
+            int count = 1;
+            bool f = true;
+            for (int i = 0; i < n_str.Length; i++)
+            {
+                for (int j = 0; j < n_str.Length; j++)
+                {
+                    if (i != j)
+                    {
+                        if (n_str[i] == n_str[j])
+                        {
+                            count += 1;
+                        }
+                    }
+                }
+                if (count == 2)
+                {
+                    f = false;
+                    break;
+                }
+                count = 1;
+            }
+            if (f)
+            {
+                Console.WriteLine(n1);
+            }
+
+            n1 += 1;
+        }
+    }
+}
\ No newline at end of file