洛谷 P1747 好奇怪的游戏

https://www.luogu.com.cn/problem/P1747?contestId=67264

AC代码

#include
#include
using namespace std;
struct date
{
	int x,y;
};
int n,m,x,y,g[410][410];
int nextp[12][2]={{-2,-1},{-2,1},{2,-1},{2,1},
				{-1,-2},{1,-2},{-1,2},{1,2},
				{-2,-2},{-2,2},{2,2},{2,-2}};
void bfs(int x,int y)
{
	memset(g,0,sizeof g);
	struct date a[40010];
	int head=1,tail=2;
	a[2].x=x,a[2].y=y;
	while(head>n>>m>>x>>y;
	bfs(n,m);
	bfs(x,y);
	return 0;
 }