static int[] NhapMangNguyen()
Console.Write("Nhap so phan tu mang: ");
int n = int.Parse(Console.ReadLine());
Console.Write("\nNhap lai so phan tu mang: ");
n = int.Parse(Console.ReadLine());
for (int i = 0; i < n; i++)
Console.Write("\nPhan tu {0} = ", i);
A[i] = int.Parse(Console.ReadLine());
static void XuatMangNguyen(int[] A)
Console.WriteLine("\nCac gia tri cua mang:");
for (int i = 0; i < A.Length; i++)
Console.Write("{0} ", A[i]);
static int Bai169(int[] A)
for (int i = 1; i < A.Length; i++)
public static void Main()
int[] A = NhapMangNguyen();
Console.WriteLine("\nSo can tim: {0}",Bai169(A));