去掉注销输出的是11 没去掉输出的1111 ？

#include<bits/stdc++.h>
using namespace std;

const int inf=1e6+5;
const int e[7]={0,100000,10000,1000,100,10,1};

int st,ed;
bool vis[inf][7],flag;

struct node{
    int num,step,arrow;
    node(int _num,int _step,int _arrow):
        num(_num),step(_step),arrow(_arrow){}
}u(0,0,0);

queue<node>q;

void go_right(){if(flag)return ;
    node v=u; v.arrow++;  v.step++;
    if(vis[v.num][v.arrow])return ;
       vis[v.num][v.arrow]=true;
    q.push(v); return ;
}

void go_leftt(){if(flag)return ;
    node v=u; v.arrow--;  v.step++;
    if(vis[v.num][v.arrow])return ;
       vis[v.num][v.arrow]=true;
    q.push(v); return ;
}

void upup(){if(flag)return ;
    node v=u;     v.step++;
    v.num=v.num+e[v.arrow];
    if(v.num==ed){cout<<v.step;flag=true;}
    if(vis[v.num][v.arrow])return ;
       vis[v.num][v.arrow]=true;
    q.push(v); return ;
}

void down(){if(flag)return ;
    node v=u;     v.step++;
    v.num=v.num-e[v.arrow];
    if(v.num==ed){cout<<v.step;flag=true;}
    if(vis[v.num][v.arrow])return ;
       vis[v.num][v.arrow]=true;
    q.push(v); return ;
}

void swap0(){if(flag)return ;
    node v=u;v.step++;
    int kl=v.num/e[1];
    int kr=(v.num/e[v.arrow])%10;
    v.num=v.num-kl*e[1]+kr*e[1]-kr*e[v.arrow]+kl*e[v.arrow];
    if(v.num==ed){cout<<v.step;flag=true;}
    if(vis[v.num][v.arrow])return ;
       vis[v.num][v.arrow]=true;
     q.push(v); return ;
}

void swap1(){if(flag)return ;
    node v=u;v.step++;
    int kl=v.num%10;
    int kr=(v.num/e[v.arrow])%10;
    v.num=v.num-kl+kr-kr*e[v.arrow]+kl*e[v.arrow];
    if(v.num==ed){cout<<v.step;flag=true;}
    if(vis[v.num][v.arrow])return ;
       vis[v.num][v.arrow]=true;
     q.push(v); return ;
}

signed main(){
    ios::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    cin>>st>>ed;
    if(st==ed){cout<<'0';return 0;}
    node a(st,0,1);q.push(a);
    while(!q.empty()){
        u=q.front();q.pop();
        vis[u.num][u.arrow]=1;
        //cout<<u.num<<' '<<u.step<<'\n';
        if(u.num==ed){cout<<u.step;return 0;}
        if(u.arrow!=6)go_right(),swap1();
        if(u.arrow!=1)go_leftt(),swap0();
        int k=(u.num/e[u.arrow])%10;
        if(k>0)down();
        if(k<6)upup();
    }
    return 0;
}