using System;

public class Program

{

    public static void Main()

    {

        var str = "a11;23;4214;124124;1231231;1231231;1231231;231231111;2312311;123123;123123;1231;13213231;1232;124124;1231231;1231231;1231231;231231111;231;124124;1231231;1231231;1231231;231231111;231";

        var spl = str.Split(';');

        var output = new string[4]{"", "", "", ""};

        var output_limit = new int[]{60, 60, 120, 120};

        var idx = 0;

        foreach (var s in spl)

        {

            var output_tmp = output[idx] + (s + ";");

            if (output_tmp.Length <= output_limit[idx])

            {

                output[idx] = output_tmp;

            }

            else if (output_tmp.Length == output_limit[idx] + 1)

            {

                output[idx] = output_tmp.Substring(0, output_tmp.Length - 1);

            }

            else

            {

                // 第一个field不会超过limit

                idx += 1;

                output[idx] = s + ";";              

            }

            foreach (var line in output)

            {

                Console.WriteLine($"{line}|{line.Length}");

            }

        }

        Console.WriteLine("Hello World");

    }

}