using System;

using System.Collections.Generic;

​

​

public class Program

{ 

    public static void Main()

    {

        var ids = new List<int> {int.MaxValue,int.MaxValue,int.MaxValue,4,5,5,6};

        var sum = 0;

        foreach (var id in ids)

        {

            sum += id % 100;

            Console.WriteLine(sum);

        }

        sum %= 100;

        Console.WriteLine(sum);

    }   

}