我所有点都是wrong answer On line 1 column 1, read -, expected 7. 得分0。

但是我下载了数据手动输入答案又没有错误，这是为什么呢！！！？？？

下面是我的代码

#include<bits/stdc++.h>
using namespace std;
struct Mystruct{
	int s;
	int num;
};
int maps[31][31];
map<int,int> vis;
int n,m,q;
int wx,wy,stx,sty,edx,edy;
queue<Mystruct> a;
Mystruct example;
Mystruct example2;
int ans;
int xx[4]={-1,0,1,0};
int yy[4]={0,1,0,-1};
int terms(int x1,int y1,int x2,int y2){
	int transform;
	transform+=x1;
	transform*=100;
	transform+=y1;
	transform*=100;
	transform+=x2;
	transform*=100;
	transform+=y2;
    return transform;
}
int main(){
	scanf("%d%d%d",&n,&m,&q);
	for(int i=1;i<=n;i++)
	for(int j=1;j<=m;j++)
	scanf("%d",&maps[i][j]);
	
	for(int t=1;t<=q;t++)
	{	
	    int ans=-1; 
		scanf("%d%d%d%d%d%d",&wx,&wy,&stx,&sty,&edx,&edy);
		if(maps[wx][wy]==0||maps[stx][sty]==0||maps[edx][edy]==0)
		{
		printf("%d",ans);
		continue;
	    }
		example2.s=0,example2.num=terms(wx,wy,stx,sty);
		a.push(example2);
		vis[example2.num]=1;
		
		while(!a.empty())
		{
			int trans;
			int vacantx,vacanty,nowx,nowy;
			int nextx,nexty;
			int nextnowx,nextnowy;
			example=a.front();
			a.pop();
			trans=example.num;
			nowy=trans%100;
			trans/=100;
			nowx=trans%100;
			trans/=100;
			vacanty=trans%100;
			trans/=100;
			vacantx=trans%100;
			
		    if(nowx==edx&&nowy==edy)
			{
			ans=example.s;
			break;
		    }
		    
		    for(int i=0;i<=3;++i)
		    {
		    	nextx=vacantx+xx[i],nexty=vacanty+yy[i];
		    	nextnowx=nowx,nextnowy=nowy;
		    	if(nextx<=0||nextx>n||nexty<=0||nexty>m)
		    	continue;
		    	if(maps[nextx][nexty]==0)
		    	continue;
		    	if(nextx==nowx&&nexty==nowy)
				nextnowx=vacantx,nextnowy=vacanty;
				
				trans=terms(nextx,nexty,nextnowx,nextnowy);
				if(vis[trans]==1)
				continue;
				else
				{
			      example2.s=example.s+1,example2.num=trans,vis[trans]=1,a.push(example2);
			    }
			}
        }
        printf("%d\n",ans);
        
        while(!a.empty())
        a.pop();
        
        vis.clear();
    }
    return 0;
}