```cpp
#include <iostream>
#include <cstdio>
using namespace std;
const int MAXN=7;
const int dx[4]={1, 0,-1, 0};
const int dy[4]={0, 1, 0,-1};
int _map[MAXN][MAXN],p[MAXN][MAXN];
int n,m,t,sx,sy,fx,fy,ans;
void DFS(int x,int y) {
if(x<=0||x>n||y<=0||y>m)return;
p[x][y]=1;
if(x==fx&&y==fy) {
ans++;
p[x][y]=0;
return;
}
for(int i=0;i<4;i++) {
if(!_map[x+dx[i]][y+dy[i]]&&!p[x+dx[i]][y+dy[i]])
DFS(x+dx[i],y+dy[i]);
}
p[x][y]=0;
}
int main() {
cin>>n>>m>>t>>sx>>sy>>fx>>fy;
for(int i=0;i<t;i++) {
int x,y;
cin>>x>>y;
_map[x][y]=1;
}
DFS(sx,sy);
cout<<ans<<endl;
return 0;
}
```
by xiao_bao @ 2019-04-07 19:42:36
帮你改了一下，应该能过了。
by xiao_bao @ 2019-04-07 19:45:10
@[xiao_bao](/space/show?uid=118603) 哦哦，谢谢
by PZimba @ 2019-04-07 21:09:35