求助

请问这道题char和int循环读入有问题吗？

#include<bits/stdc++.h>
using namespace std;
#define N 100100
int V,E,u,v,T;
struct node{
    int degree;
    vector <int> edge;
}d[N];
bool vis[N];
int Stark[N],top;
int dfn[N],t;
int low[N];
int color[N],hue;
int tot[N];
void Tanjar(int u){
    dfn[u]=++t;
    low[u]=t;
    vis[u]=true;
    Stark[++top]=u;
    for(int i=0;i<d[u].degree;i++){
        v=d[u].edge[i];
        if(dfn[v]==false){
            Tanjar(v);
            low[u]=min(low[u],low[v]);
        }
        else if(vis[v]==true){
            low[u]=min(low[u],low[v]);
        }
    }
    if(dfn[u]==low[u]){
        color[u]=++hue;
        vis[u]=false;
        while(Stark[top]!=u){
            color[Stark[top]]=hue;
            vis[Stark[top--]]=false;
        }
        top--;
    }
}
char ch1,ch2;
int main(){
    cin>>T;
//  T=1;
    while(T--){
        memset(d,0,sizeof(d));
        memset(vis,0,sizeof(vis));
        memset(Stark,0,sizeof(Stark));
        memset(dfn,0,sizeof(dfn));
        memset(low,0,sizeof(low));
        memset(color,0,sizeof(color));
        memset(tot,0,sizeof(tot));
        cin>>V>>E;
        for(int i=1;i<=E;i++){
            cin>>ch1>>u>>ch2>>v;
            if(ch1=='h'&&ch2=='h'){
                d[u+V].edge.push_back(v);
                d[u+V].degree+=1;
                d[v+V].edge.push_back(u);
                d[v+V].degree+=1;
            }
            if(ch1=='h'&&ch2=='m'){
                d[u+V].edge.push_back(v+V);
                d[u+V].degree+=1;
                d[v].edge.push_back(u);
                d[v].degree+=1;
            }
            if(ch1=='m'&&ch2=='h'){
                d[u].edge.push_back(v);
                d[u].degree+=1;
                d[v+V].edge.push_back(u+V);
                d[v+V].degree+=1;
            }
            if(ch1=='m'&&ch2=='m'){
                d[u].edge.push_back(v+V);
                d[u].degree+=1;
                d[v].edge.push_back(u+V);
                d[v].degree+=1;
            }
        }
        V+=V;
        for(int i=1;i<=V;i++){
            if(dfn[i]==false){
                Tanjar(i);
            }
        }
        bool pd=0;
        for(int i=1;i<=V/2;i++){
            if(color[i]==color[i+V/2]){
                cout<<"BAD"<<endl;
                pd=1;
                break;
            }
        }
        if(pd==0){
            cout<<"GOOD"<<endl;
        }
    }

}