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

namespace TrophonTheGrumpyCat
{
    class Program
    {
        static void Main(string[] args)
        {
            int matrixRowsCount = int.Parse(Console.ReadLine());
            List<string> matrix = new List<string>();
            int currentCol = 0;
            int currentRow = 0;
            for (int i = 0; i < matrixRowsCount; i++)
            {
                matrix.Add(Console.ReadLine());
                if (matrix[i].Contains("S"))
                {
                    currentRow = i;
                    currentCol = matrix[i].IndexOf("S");
                }
            }

            string directions = Console.ReadLine();
            int turns = 0;
            for (int i = 0; i < directions.Length; i++)
            {
                turns++;
                char move = directions[i];
                switch (move)
                {
                    case 'D':
                        while (true)
                        {
                            currentRow++;

                            if (currentRow == matrix.Count())
                            {
                                currentRow = 0;
                                if (currentCol >= matrix[currentRow].Length)
                                {
                                    continue;
                                }
                                else
                                {
                                    break;
                                }
                            }
                            if (currentCol >= matrix[currentRow].Length)
                            {
                                continue;
                            }
                            else
                            {
                                break;
                            }
                        }
                        break;
                    case 'U':
                        while (true)
                        {
                            currentRow--;
                            if (currentRow == -1)
                            {
                                currentRow = matrix.Count() - 1;
                                if (currentCol >= matrix[currentRow].Length)
                                {
                                    continue;
                                }
                                else
                                {
                                    break;
                                }
                            }
                            if (currentCol >= matrix[currentRow].Length)
                            {
                                continue;
                            }
                            else
                            {
                                break;
                            }
                        }
                        break;
                    case 'L':
                            currentCol--;
                            if (currentCol == -1)
                            {
                                currentCol = matrix[currentRow].Length - 1;
                            }
                            break;
                    case 'R':
                        currentCol++;
                        if (currentCol== matrix[currentRow].Length)
                        {
                            currentCol = 0;
                        }
                        break;
                }
                if (matrix[currentRow][currentCol] == 'E')
                {
                    Console.WriteLine("Experiment successful. {0} turns required.", turns);
                    return;
                }
            }
            Console.WriteLine("Robot stuck at {0} {1}. Experiment failed.", currentRow, currentCol);
        }
    }
}