第三个测试点的out文件和我自己测试的输出是一样的

但是却WA了

代码：

#include <iostream>
using namespace std;

unsigned long long map[30][30];
int dx[8] = { 2,1,-1,-2,-2,-1,1,2 };
int dy[8] = { 1,2,2,1,-1,-2,-2,-1 };
int n, m;
int hx, hy;

void input()
{
	cin >> n >> m >> hx >> hy;
}
void work()
{
	for (int i = 0; i <= n; i++)
	{
		for (int j = 0; j <= m; j++)
		{
			if (i == 0 && j == 0) map[i][j] = 1;
			else if (i == 0 && j == 1) map[i][j] = 1;
			else if (i == 1 && j == 0) map[i][j] = 1;
			else map[i][j] = map[i - 1][j] + map[i][j - 1];
			
			map[hx][hy] = 0;
			for (int k = 0; k < 8; k++)
			{
				map[hx + dx[k]][hy + dy[k]] = 0;
			}
		}
	}
}
void output()
{
	/*for (int i = 0; i <= n; i++)
	{
		for (int j = 0; j <= m; j++)
		{
			cout << map[i][j] << " ";
		}
		cout << endl;
	}*/

	cout << map[n][m];
}
int main()
{
	input();
	work();
	output();
	return 0;
}