using System;

​

public class Program

{

    public static void Main()

    {

        Program p = new Program();

        Console.WriteLine(p.marathon());

    }

    public int[] arrTime = { 5, 8, 12, 18, 23 };

    public int[] arrEnergy = { 25, 18, 12, 10, 5 };

    public int marathon()

        {

​

            int timetaken = 0;

            int Energy = 400;

            int distance = 26;

            int min = 0;

            timetaken = fastesttime(Energy,distance,timetaken);      

            return timetaken;

        }

        public int fastesttime(int Energy,int maxdistance,int timetaken)

        {

            int finishTime;

        if(Energy >=0 && maxdistance==0)

        {

            //Energy=400; maxdistance=26;

            return timetaken;

        }

​

        if(Energy <= 0)

            return 0;

​

        //for(int i=0;i<arrTime.Length;i++)

        {

           finishTime = (fastesttime(Energy-arrEnergy[0],maxdistance-1,timetaken+arrTime[0]));

            //Console.WriteLine(finishTime);

           if(finishTime != 0)

           {

               return finishTime;

           }

        }

       // Console.WriteLine(finishTime);

        {

           finishTime = (fastesttime(Energy-arrEnergy[1],maxdistance-1,timetaken+arrTime[1]));

           if(finishTime != 0)

           {

               return finishTime;

           }

        }

        {

           finishTime = (fastesttime(Energy-arrEnergy[2],maxdistance-1,timetaken+arrTime[2]));

           if(finishTime != 0)

           {

               return finishTime;

           }

        }

        {

           finishTime = (fastesttime(Energy-arrEnergy[3],maxdistance-1,timetaken+arrTime[3]));

           if(finishTime != 0)

           {

               return finishTime;

           }

        }

        {

           finishTime = (fastesttime(Energy-arrEnergy[4],maxdistance-1,timetaken+arrTime[4]));

           if(finishTime != 0)

           {

               return finishTime;

           }

        }

        return 0;

        }

}

​