CountSubstringOccurrences

namespace CountSubstringOccurrences
{
    using System;

    public class CountSubstringOccurrences
    {
        public static void Main()
        {
            string input = Console.ReadLine().ToLower();
            string pattern = Console.ReadLine().ToLower();
            int occurencesCounter = 0;
            int indexOfOccurences = input.IndexOf(pattern);

            while (indexOfOccurences!=-1)
            {
                occurencesCounter++;
                indexOfOccurences = input.IndexOf(pattern, indexOfOccurences + 1);
            }

            Console.WriteLine(occurencesCounter);
        }
    }
}