datum.cs

using System;

public class datum {
    public static void Main (string[] args) {
        string line = Console.ReadLine ();
        int space = line.IndexOf (' ');
        int day = int.Parse (line.Substring (0, space));
        int month = int.Parse (line.Substring (space + 1));
        for (int x = 1; x < month; x++) {
            switch (x) {
                case 1:
                case 3:
                case 5:
                case 7:
                case 8:
                case 10:
                case 12:
                    day += 31;
                    break;
                case 2:
                    day += 28;
                    break;
                case 4:
                case 6:
                case 9:
                case 11:
                    day += 30;
                    break;
            }
        }
        day %= 7;
        Console.WriteLine (day == 0 ? "Wednesday" : day == 1 ? "Thursday" : day == 2 ? "Friday" : day == 3 ? "Saturday" : day == 4 ? "Sunday" : day == 5 ? "Monday" : "Tuesday");
    }
}