rt，在本地编译过不鸟，蛋不汁道是什么原因，求dalao指教

#include<bits/stdc++.h>
using namespace std;
char mp[1001][1001];
int n,m,k,step,d[1000001][4];
int bfs(int,int,int);
int main()
{
	int t;
	cin>>t;
	for(int i=1;i<=t;i++)
	{
		memset(d,0,sizeof(d));
		step=0;
		cin>>n>>m>>k;
		int x,y,d;
		cin>>x>>y>>d;
		for(int j=1;j<=n;j++)
		{
			for(int o=1;o<=m;o++)
			{
				char ch;
				cin>>ch;
				mp[j][o]=ch;
			}
		}
		cout<<bfs(x,y,d)<<endl;
	}
	return 0;
}
int bfs(int x,int y,int d)
{
	d[1][0]=x;
	d[1][1]=y;
	d[1][2]=0;
	d[1][3]=d;
	int head=0,tail=1;
	while(head<tail)
	{
		head++;
		for(int i=1;i<=k;i++)
		{
			int xx,yy;
			if(d[head][3]==0)
			{
				xx=d[head][0];
				yy=d[head][1]+1;
			}
			else if(d[head][3]==1)
			{
				xx=d[head][0]-1;
				yy=d[head][1];
			}
			else if(d[head][3]==2)
			{
				xx=d[head][0];
				yy=d[head][1]-1;
			}
			else if(d[head][3]==3)
			{
				xx=d[head][0]+1;
				yy=d[head][1];
			}
			if(xx>=1 and xx<=n and yy>=1 and yy<=m and mp[xx][yy]=='.')
			{
				tail++;
				d[tail][0]=xx;
				d[tail][1]=yy;
				d[tail][2]=d[head][2]+1;
				d[tail][3]=d[head][3];
				mp[xx][yy]='#';
			}
			else
			{
				d[tail][3]=(d[head][3]+1)%4;
			}
		}
	}
	return d[tail][2];
}