`x>m`?
`y>n`?
by little_cindy @ 2021-10-07 14:34:12
@[dtrthg](/user/379113)
改成：
```cpp
#include <bits/stdc++.h>
using namespace std;
int cnt,n,m;
int dx[]={1,-2,2,-1};
int dy[]={2,1,1,2};
void dfs(int x,int y)
{
if(x>n||y>m||x<0||y<0) return ;
if(x==n&&y==m)
{
cnt++;
return ;
}
for(int i=0;i<4;i++)
{
dfs(x+dx[i],y+dy[i]);
}
}
int main()
{
cin>>n>>m;
dfs(0,0);
cout<<cnt<<endl;
return 0;
}
```
by little_cindy @ 2021-10-07 14:34:54
@[little_cindy](/user/357311) 谢谢大佬 ≧∇≦
by dtrthg @ 2021-10-07 14:39:37