感觉代码没问题

#include<bits/stdc++.h>
using namespace std;
short Bm,Bn,Cm,Cn,i,j;
long long w[25][25];
int main()
{
	cin>>Bn>>Bm>>Cn>>Cm;
	w[0][0]=1;
	w[Cn][Cm]=0;
	for(i=1;i<=Bn;i++){
		if(Cm==0&&i==Cn)break;
		w[i][0]=1;
	}
	for(i=1;i<=Bn;i++){
		if(Cn==0&&i==Cm)break;
		w[0][i]=1;
	}
	
	for(i=1;i<=Bn;i++){
		for(j=1;j<=Bm;j++){
			if(  ( (i==Cn+2||i==Cn-2) && (j==Cm+1||j==Cm-1) )
									  ||
			     ( (i==Cn+1||i==Cn-1) && (j==Cm+2||j==Cm-2) )
				 					  ||
				 (i==Cn)&&(j==Cm)){
				w[i][j]=0; 
			}else{
				w[i][j]=w[i-1][j]+w[i][j-1];
			}
			
		}
	}
	for(i=0;i<=Bn;i++){
		for(j=0;j<=Bm;j++){
			cout<<w[i][j]<<'\t';
		}
		cout<<endl;
	}
	cout<<w[Bn][Bm];
}