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

namespace Advance
{
    class Program
    {
        static void Main(string[] args)
        {
            int totalCars = 0;
            int greenLightSeconds = int.Parse(Console.ReadLine());
            int totalgreenLightSeconds = greenLightSeconds;
            int freeWindow = int.Parse(Console.ReadLine());

            while (true)
            {
                string input = Console.ReadLine();
                if (input == "END")
                {
                    break;
                }
                else if (input == "green")
                {
                    greenLightSeconds = totalgreenLightSeconds;

                    continue;
                }
                if (greenLightSeconds == 0)
                {
                    continue;
                }
                int CarsLenght = input.Length;
                if (CarsLenght <= greenLightSeconds)
                {

                    greenLightSeconds = greenLightSeconds - CarsLenght;



                }
		    else
                {
                    if (greenLightSeconds + freeWindow >= CarsLenght)
                    {
                        greenLightSeconds = 0;


                    }
                    else
                    {
                        int indexoFcrash = greenLightSeconds + freeWindow;
                        Console.WriteLine("A crash happened!");
                        Console.WriteLine($"{input} was hit at {input[indexoFcrash]}.");
                        return;
                    }


                }



                totalCars++;
            }

                Console.WriteLine($"Everyone is safe.");
                Console.WriteLine($"{totalCars} total cars passed the crossroads.");














        }
    }
}