Bob programmed a robot to navigate through a 2d maze.

The maze has some obstacles. Empty cells are denoted by the character '.', where obstacles are denoted by '#'.

There is a single robot in the maze. Its start position is denoted with the character 'S'. This position has no obstacle in it. There is also a single exit in the maze. Its position is denoted with the character 'E'. This position has no obstacle in it.

The robot can only move up, left, right, or down.

When Bob programmed the robot, he wrote down a string of digits consisting of the digits 0 to 3, inclusive. He intended for each digit to correspond to a distinct direction, and the robot would follow the directions in order to reach the exit. Unfortunately, he forgot to actually assign the directions to digits.

The robot will choose some random mapping of digits to distinct directions. The robot will map distinct digits to distinct directions. The robot will then follow the instructions according to the given string in order and chosen mapping. If an instruction would lead the robot to go off the edge of the maze or hit an obstacle, the robot will crash and break down. If the robot reaches the exit at any point, then the robot will stop following any further instructions.

Bob is having trouble debugging his robot, so he would like to determine the number of mappings of digits to directions that would lead the robot to the exit.

Input

The first line of input will contain two integers n and m (2 ≤ n, m ≤ 50), denoting the dimensions of the maze.

The next n lines will contain exactly m characters each, denoting the maze.

Each character of the maze will be '.', '#', 'S', or 'E'.

There will be exactly one 'S' and exactly one 'E' in the maze.

The last line will contain a single string s (1 ≤ |s| ≤ 100) — the instructions given to the robot. Each character of s is a digit from 0 to 3.

Output

Print a single integer, the number of mappings of digits to directions that will lead the robot to the exit.

Example

Input
5 6
.....#
S....#
.#....
.#....
...E..
333300012
Output
1
Input
6 6
......
......
..SE..
......
......
......
01232123212302123021
Output
14
Input
5 3
...
.S.
###
.E.
...
3
Output
0

Note

For the first sample, the only valid mapping is , where D is down, L is left, U is up, R is right.

只要安全到达出口就可以了,可以有多余的指令。

代码:

#include <iostream>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <cmath>
using namespace std;
int n,m,dir[][] = {,,,,,-,-,},c = ,visited[],f[],sx,sy;
char mp[][],s[];
int check()
{
int px = sx,py = sy;
for(int i = ;s[i];i ++)
{
px += dir[f[s[i] - '']][],py += dir[f[s[i] - '']][];
if(px < || py < || px >= n || py >= m || mp[px][py] == '#')return ;
if(mp[px][py] == 'E')return ;
}
return ;
}
void dfs(int k)
{
if(k == )
{
if(check())c ++;
return;
}
for(int i = ;i < ;i ++)
{
if(!visited[i])
{
visited[i] = ;
f[k] = i;
dfs(k + );
visited[i] = ;
}
}
}
int main()
{
cin>>n>>m;
for(int i = ;i < n;i ++)
{
for(int j = ;j < m;j ++)
{
cin>>mp[i][j];
if(mp[i][j] == 'S')sx = i,sy = j;
}
}
cin>>s;
dfs();
cout<<c;
}

New Year and Buggy Bot的更多相关文章

  1. 【Good Bye 2017 B】 New Year and Buggy Bot

    [链接] 我是链接,点我呀:) [题意] 在这里输入题意 [题解] 枚举一下全排列.看看有多少种可以到达终点即可. [代码] #include <bits/stdc++.h> using ...

  2. Codeforces New Year and Buggy Bot 题解

    主要思路:全排列,然后按输入的字符串走并且判断是否撞墙 注:这样不会TLE,全排列最多24种 Code(C++): #include<bits/stdc++.h> using namesp ...

  3. 冬训 day2

    模拟枚举... A - New Year and Buggy Bot(http://codeforces.com/problemset/problem/908/B) 暴力枚举即可,但是直接手动暴力会非 ...

  4. Good Bye 2017

    太菜了啊,一不小心就goodbye rating了 A. New Year and Counting Cards time limit per test 1 second memory limit p ...

  5. [Codeforces]Good Bye 2017

    A - New Year and Counting Cards #pragma comment(linker, "/STACK:102400000,102400000") #inc ...

  6. Good Bye 2017 A B C

    Good Bye 2017 A New Year and Counting Cards 题目链接: http://codeforces.com/contest/908/problem/A 思路: 如果 ...

  7. CodeForces Goodbye 2017

    传送门 A - New Year and Counting Cards •题意 有n张牌,正面有字母,反面有数字 其中元音字母$a,e,o,i,u$的另一面必须对应$0,2,4,6,8$的偶数 其他字 ...

  8. cf 908B

    B - New Year and Buggy Bot 思路:刚开始看到这个题的时候,一头雾水,也不知道要干什么,后来百度翻译了了一遍,看明白了,不得不说自己的英语太差了,好了,步入正题: 给你n行m列 ...

  9. 《HelloGitHub》之GitHub Bot

    起因 我在github上发起了一个开源项目:<HelloGitHub月刊>,内容是github上收集的好玩,容易上手的开源项目. 目的:因为兴趣是最好的老师,我希望月刊中的内容可以激发读者 ...

随机推荐

  1. SpringMVC:学习笔记(6)——转换器和格式化

    转换器和格式化 说明 SpringMVC的数据绑定并非没有限制,有案例表明,在SpringMVC如何正确绑定数据方面是杂乱无章的,比如在处理日期映射到Date对象上. 为了能够让SpringMVC进行 ...

  2. HashTable的使用,扑克牌发牌游戏

    l  场景 主要实现以下功能: 1.      首先给扑克牌中每张牌设定一个编号,下面算法实现的编号规则如下:   红桃按照从小到大依次为:1-13   方块按照从小到大依次为:14-26   黑桃按 ...

  3. 一些逼格略高的 js 片段

    // 一个接一个运行 // timeout 不能直接放在 for 里面,暂时不知道为什么 function functionOneByOne(fn, times, duration) { for(va ...

  4. 内核模块编译时怎样绕过insmod时的版本检查

    1.Uboot:每个arm芯片或者海斯芯片都有各自的uboot. 2.但他们的内核版本可以是一样的,主要是跟各自内核的进行的编译选项有关, 31的内核版本里加了版本检查选项“Kernel type-& ...

  5. HTML table元素

    搬运,内容来自HTML Dog. 简单示例 <!DOCTYPE html> <html> <body> <table> <tr> <t ...

  6. 快乐学习 Ionic Framework+PhoneGap 手册1-3 {面板切换}

    编程的快乐和乐趣,来自于能成功运行程序并运用到项目中,会在后面案例,实际运用到项目当中与数据更新一起说明 从面板切换开始,请看效果图和代码,这只是一个面板切换的效果 Index HTML Code & ...

  7. collectionView的案例

    #import "ViewController.h" #import "CollectionViewCell.h" @interface ViewControl ...

  8. Kubernetes Horizontal Pod Autoscaler

    非常牛逼的技术,目前最新的版本支持众多的Feature HPA功能需要Heapster收集的CPU.内存等数据作为支撑 配置示例: apiVersion: autoscaling/v2beta1 ki ...

  9. php flock 使用实例

    php flock 使用实例 bool flock ( resource $handle , int $operation [, int &$wouldblock ] ) flock()允许执 ...

  10. 【P2774】方格取数问题(贪心+最大流,洛谷)

    首先,我们要读懂这道题,否则你会和我一开始产生一样的疑问,把所有的数都取走剩下一个最小的不就可以了么???然后我们发现样例完全不是这么回事.题目中所说的使相邻的两个数没有公共边,是指你去走的数,也就是 ...