看看我的:
```cpp
#include<bits/stdc++.h>
using namespace std;
int n,m,t,sx,sy,sum,fx,fy,ax,ay,bx[4]={-1,1,0,0},by[4]={0,0,-1,1},a[11][11];
void dfs(int x,int y){
if(x==fx&&y==fy){
sum++;
}
else{
for(int i=0;i<4;i++){
int l=x+bx[i];
int r=y+by[i];
if(l<=n&&r<=m&&l>=1&&r>=1&&a[l][r]!=1){
a[l][r]=1;
dfs(l,r);
a[l][r]=0;
}
}
}
}
int main()
{
cin>>n>>m>>t>>sx>>sy>>fx>>fy;
for(int i=0;i<t;i++){
cin>>ax>>ay;
a[ax][ay]=1;
}
a[sx][sy]=1;
dfs(sx,sy);
cout<<sum;
return 0;
}
```
by luoguandy @ 2024-01-01 20:14:10
@[zjh20081205](/user/616712) 将a[bx][by]的初值设为1.
by __zaa__ @ 2024-01-01 20:29:32
@[__zaa__](/user/716965) 谢谢大佬!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
by zjh20081205 @ 2024-01-01 20:45:30