using System;
using System.Collections.Generic;
using System.IO;

namespace Laba8
{
    class Program
    {
        private const string INPUT_PATH = @"E:\ОАИП\Кирилл\laba8 Aleks\Laba8\input.dat";
        private const string OUTPUT_PATH = @"E:\ОАИП\Кирилл\laba8 Aleks\Laba8\output.dat";
        private static List<Student> students = new List<Student>();
        static void Main(string[] args)
        {
            Console.WriteLine("Введите кол-во учеников:");
            int count = Convert.ToInt32(Console.ReadLine());
            for (int i = 0; i < count; i++)
            {
                Student st = new Student();
                Console.WriteLine("Введите " + (i + 1).ToString()+"-го ученика!");
                Console.Write("ФИО:");
                st.fullname = Console.ReadLine();
                Console.Write("Группа:");
                st.groupId = Convert.ToInt32(Console.ReadLine());
                Console.Write("Оценки:");
                string[] marks = Console.ReadLine().Split(new char[1] { ' ' });
                int[] intmarks = new int[3];
                for (int j = 0; j < 3; j++)
                {
                    intmarks[j] = Convert.ToInt32(marks[j]);
                }
                st.marks = intmarks;
                Console.Write("Размер стипендии:");
                st.money = Convert.ToDouble(Console.ReadLine());
                Console.WriteLine();
                students.Add(st);
            }
              using (BinaryWriter bw = new BinaryWriter(File.Open(INPUT_PATH, FileMode.Create)))
            {
                foreach (Student student in students)
                {
                    bw.Write(student.fullname);
                    bw.Write(student.groupId);
                    for (int i = 0; i < 3; i++)
                    {
                        bw.Write(student.marks[i]);
                    }
                    bw.Write(student.money);
                }
            }
            using (BinaryWriter bw = new BinaryWriter(File.Open(OUTPUT_PATH, FileMode.Create)))
            {
                foreach (Student student in students)
                {
                    bool hasBadMark = false;
                    for (int i = 0; i < 3; i++)
                    {
                        if (student.marks[i] < 3) {
                            hasBadMark = true;
                            break;
                        }
                    }
                    bw.Write(student.fullname);
                    bw.Write(student.groupId);
                    for (int i = 0; i < 3; i++)
                    {
                        bw.Write(student.marks[i]);
                    }
                    if (!hasBadMark)
                        student.setMoney(student.money * 1.3);
                    bw.Write(student.money);
                }
            }
            using (BinaryReader reader = new BinaryReader(File.Open(OUTPUT_PATH, FileMode.Open)))
            {
                while (reader.PeekChar() > 0)
                {
                    Console.WriteLine();
                    Console.WriteLine("ФИО:" + reader.ReadString());
                    Console.WriteLine("Группа:" + reader.ReadInt32());
                    for (int i = 0; i < 3; i++)
                    {
                        int curMark = reader.ReadInt32();
                        Console.Write(curMark.ToString() + " ");
                    }
                    Console.WriteLine();
                    Console.WriteLine("Стипендия:" + reader.ReadDouble());
                }
            }
            Console.ReadLine();
        }
    }

    struct  Student
    {
        public string fullname;
        public int groupId;
        public int[] marks;
        public double money;

        public void setMoney(double money)
        {
            this.money = money;
        }

    }
}