[得分](https://www.luogu.com.cn/record/139833976)
by TT20100707 @ 2023-12-16 16:32:04
这是我大号的AC代码：
```cpp
#include<bits/stdc++.h>
using namespace std;
int n,m,t,b,c,vis[10][10],a[10][10],qx,qy,zx,zy;
int xx[5]{0,0,0,1,-1},ans=0,yy[5]{0,1,-1,0,0};
void dfs(int x,int y)
{
if(x==zx&&y==zy)
{
ans++;
return ;
}
for(int i=1;i<=4;i++)
{
int ax=x+xx[i],ay=y+yy[i];
if(ax>=1&&ax<=n&&ay>=1&&ay<=m&&a[ax][ay]!=1&&vis[ax][ay]==0)
{
vis[ax][ay]=1;
dfs(ax,ay);
vis[ax][ay]=0;
}
}
}
int main()
{
cin>>n>>m>>t;
cin>>qx>>qy>>zx>>zy;
while(t--)
{
cin>>b>>c;
a[b][c]=1;
}
vis[qx][qy]=1;
dfs(qx,qy);
cout<<ans;
return 0;
}
```
by liuliupinli @ 2023-12-16 16:36:03
```cpp
if(x==fx&&y==fy){
sum++;
```
你这里应该是
```
if(x+xx[i]==fx&&y+yy[i]==fy){
sum++;
```
by liuliupinli @ 2023-12-16 16:37:38
@[TT20100707](/user/794388) 还在吗？
by liuliupinli @ 2023-12-16 16:38:41
[你确定？](https://www.luogu.com.cn/record/139943158)
by TT20100707 @ 2023-12-17 11:18:14