记录编号	291908	评测结果	AAAAAAAAAA
题目名称	[USACO Mar08] 游荡的奶牛	最终得分	100
用户昵称	open the window	是否通过	通过
代码语言	C++	运行时间	0.016 s
提交时间	2016-08-08 13:31:03	内存使用	97.26 MiB

#include<cstdio>
#include<iostream>
using namespace std;
int f[501][501][101];
int rf,cf,rs,cs,n,m,t;
char c[501][501];
int main()
{
	freopen("ctravel.in","r",stdin);
	freopen("ctravel.out","w",stdout);
	scanf("%d%d%d",&n,&m,&t);
	for (int i=1; i<=n; ++i)
	 for (int j=1; j<=m; ++j)
	  cin>>c[i][j];
	scanf("%d%d%d%d",&rf,&cf,&rs,&cs);
	f[rf][cf][0]=1;
	for (int k=1; k<=t; ++k)
	for (int i=1; i<=n; ++i)
	 for (int j=1; j<=m; ++j)
	  if (c[i][j]!='*')
	   f[i][j][k]=f[i-1][j][k-1]+f[i][j-1][k-1]+f[i+1][j][k-1]+f[i][j+1][k-1];
	printf("%d\n",f[rs][cs][t]);
}