#include<bits/stdc++.h>
using namespace std;
int a[25][25];
int b[25][25];
int dx[] = {1,0};
int dy[] = {0,1};
int hdx[] = {1,2,2,1,-2,-1,-2,-1};
int hdy[] = {2,1,-1,-2,1,2,-1,-2};
int main()
{
	int n,m,hx,hy;
	cin>>n>>m>>hx>>hy;
	b[hx][hy] = 1;
	for(int i = 0; i < 8; i++)
	{
		if(hx+hdx[i] >= 0 && hy+hdy[i] >= 0)b[hx+hdx[i]][hy+hdy[i]] = 1;
	}
	a[0][0] = 1;
	for(int i = 0; i <= n; i++)
	{
		for(int j  = 0; j <= m;j++)
		{
			if(b[i][j]!=1)
			{
				
				if(i-1<0) a[i][j] += a[i][j-1];
				else if(j-1<0) a[i][j]+=a[i-1][j];
				else a[i][j]+=a[i-1][j]+a[i][j-1];
			}
		}
	}
	for(int i = 0; i <= n; i++)
	{
		for(int j = 0; j <= m; j ++)
		{
			cout<<a[i][j]<<' ';
		}
		puts("");
	}
	cout<<a[n][m]<<endl;
	return 0;
}

已经加了出界特判 样例过了 下载了错误样例 但是devcpp编译是对的？ 求调 搞不懂了 :D