create a calendar which holds the months, the day of the months can hold an integer value i have to count the number of ints per day

public static int[] DaysPerMonth = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
public static int[] Counts = new int[31];

public class Triplet
{
  public int Month { get; private set; }
  public int Day { get; private set; }
  public int Value { get; private set; }

  public Triplet(int month, int day, int value)
  {
    Month = month;
    Day = day;
    Value = value;
  }
}

public static void Main(string[] args)
{
  string line;
  List<Triplet> triples = new List<Triplet>();

  while ((line = Console.ReadLine()) != null)
  {
    string[] parts = line.Split(' ');

    triples.Add(new Triplet(
      Int32.Parse(parts[0]),
      Int32.Parse(parts[1]),
      Int32.Parse(parts[2])));
  }