using System;
using System.Linq;
using System.Collections.Generic;
namespace _10._Crossroads
{
    class Program
    {
        static void Main(string[] args)
        {
            int greenLightSeconds = int.Parse(Console.ReadLine());
            int initialGreenLightSeconds = greenLightSeconds;

            int freeWindow = int.Parse(Console.ReadLine());

            Queue<string> queue = new Queue<string>();

            int carsPassed = 0;
            while (true)
            {
                string command = Console.ReadLine();

                if (command == "END")
                {
                    Console.WriteLine("Everyone is safe.");
                    Console.WriteLine($"{carsPassed} total cars passed the crossroads.");
                    break;
                }
                while  (command == "green"&&queue.Count>0)
                {
                    string currentCar = queue.Peek();

                    if (greenLightSeconds > 0)
                    {
                        if (freeWindow + greenLightSeconds - currentCar.Length < 0)
                        {
                            Console.WriteLine("A crash happened!");
                            Console.WriteLine($"{currentCar} was hit at {currentCar[freeWindow + greenLightSeconds]}.");
                            return;
                        }
                        greenLightSeconds -= currentCar.Length;
                        queue.Dequeue();
                        carsPassed++;
                    }
                    else
                    {
                        greenLightSeconds = initialGreenLightSeconds;
                        break;
                    }

                }
                if (command != "END" && command != "green")
                {
                    greenLightSeconds = initialGreenLightSeconds;
                    queue.Enqueue(command);
                }
            }
        }
    }
}