FrogJmp

        /// <summary>
        /// Solution
        /// 100/100
        /// </summary>
        /// <param name="X"></param>
        /// <param name="Y"></param>
        /// <param name="D"></param>
        /// <returns></returns>
        public static int solution(int X, int Y, int D)
        {
            int distance = Y - X;
            int result = distance / D;
            if (distance % D == 0)
            {
                return result;
            }
            else
            {
                return result + 1;
            }
        }