static void Main(string[] args)
Console.WriteLine("Nhap so luong phan tu:");
int n = int.Parse(Console.ReadLine());
for (int i = 0; i < n; i++)
Console.WriteLine($"Nhap phan tu a[{i}]:");
a[i] = int.Parse(Console.ReadLine());
for (int i = 0; i < a.Length; i++)
Console.WriteLine($"So lon nhat la {max}.");