using System;

using System.Collections.Generic;

using System.Linq;

​

public class Program

{

    public static void Main()

    {

        List<string> str = new List<string>();

        str.Add("100,101,102,103,104,105");

        str.Add("106,107,108,109,1000,1001,1002,1003");

        Console.WriteLine(str.Sum(x => x.Split(',').Where(y => y.Contains("10")).Count()));

    }

}