using System;

public class SinhVien
{
	public string maSV;
	public int tuoiSV;
	public bool gioiTinh;
	public string MaSV {
		get {
			return this.maSV;
		}
		set {
			this.maSV = value;
		}
	}
	public int TuoiSV {
		get {
			return this.tuoiSV;
		}
		set {
			this.tuoiSV = value;
		}
	}
	public bool GioiTinh {
		get {
			return this.GioiTinh;
		}
		set {
			this.GioiTinh = value;
		}
	}
	public SinhVien(string maSV, int tuoiSV, bool gioiTinh) {
		this.maSV = maSV;
		this.tuoiSV = tuoiSV;
		this.gioiTinh = gioiTinh;
	}
	public void ToString() {
		Console.WriteLine("Ma Sinh Vien: " + this.maSV);
		Console.WriteLine("Tuoi Sinh Vien: " + this.tuoiSV);
		Console.WriteLine("Gioi Tinh Sinh Vien: " + this.gioiTinh);
	}
	public static void Input(SinhVien objSV) {
		Console.WriteLine("Nhap ma so sinh vien can them");
		objSV.MaSV = Console.ReadLine();
		Console.WriteLine("Nhap tuoi sinh vien can them");
		objSV.TuoiSV = Int32.Parse(Console.ReadLine());
		Console.WriteLine("Nhap gioi sinh vien can them (Nam/Nu) (1/0)");
		objSV.GioiTinh = false;
		int temp = Int32.Parse(Console.ReadLine());
		if(temp == 1) objSV.GioiTinh = true;
		else objSV.GioiTinh = false;
	}
}
public class ListSV
{
	public SinhVien[] listSV;
	public int maxSV;
	public SinhVien getSV(int i) {
		return this.listSV[i];
	}
	public void setSV(int i, string maSV, int tuoiSV, bool gioiTinh) {
		this.listSV[i] = new SinhVien(maSV, tuoiSV, gioiTinh);
	}
	public int MaxSV {
		get {
			return this.maxSV;
		}
		set {
			this.maxSV = value;
		}
	}
	public ListSV(SinhVien[] listSV, int maxSV) {
		this.listSV = listSV;
		this.maxSV = maxSV;
	}
	public void Add(SinhVien objSV) {
		if(listSV.Length == maxSV) {
			Console.WriteLine("So luong sinh vien toi da, khong the them SV");
			return;
		}
		SinhVien[] newList = new SinhVien[listSV.Length + 1];
		this.listSV = newList;
		newList[newList.Length -1] = objSV;
	}
	public void Edit(SinhVien objSV, int i) {
		if(i > listSV.Length - 1) {
			Console.WriteLine("Vi tri khong ton tai");
			return;
		}
		listSV[i] = objSV;
	}
	public void Show(string kw) {
		if(kw.Equals("all"))
			for(int i=0; i<listSV.Length; i++) {
				listSV[i].ToString();
			}
		else for(int i=0; i<listSV.Length; i++) {
				if(listSV[i].MaSV.Equals(kw))
				listSV[i].ToString();
			}
	}
	public void SortAscending() {
		SinhVien temp = new SinhVien("",0,true);
		for(int i=0; i<listSV.Length; i++) {
			for(int j=i; j<listSV.Length; j++) {
				if(listSV[j].TuoiSV < listSV[i].TuoiSV) {
					temp = listSV[j];
					listSV[j] = listSV[i];
					listSV[i] = temp;
				}
			}
		}
	}
	public static void Main()
	{
		Console.WriteLine("Nhap so sinh vien toi da");
		int max = Int32.Parse(Console.ReadLine());
		SinhVien[] listSV = new SinhVien[0];
		ListSV alSV = new ListSV(listSV, max);

		SinhVien objSV = new SinhVien("",0,false);
		SinhVien.Input(objSV);
		alSV.Add(objSV);
		SinhVien.Input(objSV);
		alSV.Edit(objSV, 0);
		alSV.Show("all");

	}
}