class Result
{
    public static int birthday(List<int> s, int d, int m)
    {
        int count=0;
        
        for(var i=0; i<s.Count; i++)
        {
            var temp =SegmentSum(s, i, m);
            if(temp==d)
                count++;
        }
        return count;
    }
    public static int SegmentSum(List<int> s, int index, int room)
    {
        var sum =0;
        var iterUpto = index + room;
        for(var i=index; i<iterUpto; i++ )
        {
            if(i>=s.Count)
                break;
            sum+=s[i];
        }
        return sum;
    }
}