3zad

using System;
using System.Collections.Generic;
using System.Text;

namespace Laba2
{
    class Program
    {
        static void Main(string[] args)
        {
            int i=1;
            float p;
            p = 10;
            while (p < 100)
            {
                p = ((p/100)*10) + p;
                i++;
            }
            Console.WriteLine(i);
        Console.ReadKey();


        }
    }
}