FrogJmp

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace algos
{
    class Program
    {
        static void Main(string[] args)
        {
            int startX = 10;
            int endDest = 85;
            int step = 30;
            solution(startX, endDest, step);
        }

        public static int solution(int X, int Y, int D)
        {
            // write your code in C# 6.0 with .NET 4.5 (Mono)
            var distance = Y - X;
            double numSteps = (double) distance/D;
            var c =  Math.Ceiling(numSteps);

            return (int) c;
        }
    }
}