64pts求调

64pts,有没有大佬帮忙看眼。

#include<bits/stdc++.h>
#define int long long
#define endl "\n"
using namespace std;
const int maxn=1e7+5;
int t,n,cnt,ans;
unordered_map<string,int>mp;
string o;
void solve(){
    stack<string>q;
    mp.clear();
    cin>>n>>o;
    ans=0,cnt=0;
    bool flag=0;
    string f="#";
    for(int i=1;i<=n;i++){
        char opt;
        cin>>opt;
        if(opt=='F'){
            string name,be,ed;
            cin>>name>>be>>ed;
            if(flag==1){
                continue;
            }
            if(mp[name]==1){
                flag=1;
                continue;
            }
            mp[name]=1;
            q.push(name);
            if(be!="n"&&ed=="n"&&f=="#"){
                cnt++;
//              cout<<name<<endl;
                continue;
            }
            else if(be=="n"&&ed=="n"){
                continue;
            }
            else if(be=="n"&&ed!="n"&&f=="#"){
                f=name;
            }
            else if(be!="n"&&ed!="n"&&f=="#"){
                bool bl=0;
                for(int j=0;j<min(ed.size(),be.size());j++){
                    if(be[j]>ed[j]){
                        bl=1;
                        break;
                    }
                    else if(ed[j]>be[j]){
                        break;
                    }
                }
//              cout<<"bl:"<<bl<<endl;
                if(be.size()>ed.size()){
                    bl=1;
                }
                if(bl==1){
                    f=name;
                }
            }

        }
        else{
            if(flag==1){
                continue;
            }
            if(q.empty()){
                flag=1;
                continue;
            }
            string s=q.top();
            if(s==f){
                f="#";
            }
            mp[s]=0;
            q.pop();
            if(q.empty()){
                ans=max(ans,cnt);
//              cout<<ans<<endl;
                cnt=0;
            }
        }
    }
    if(!q.empty()){
        flag=1;
    }
    if(flag==1){
        cout<<"ERR"<<endl;
        return;
    }
    if(o[2]=='1'){
        if(ans==0){
            cout<<"Yes"<<endl;
        }
        else{
            cout<<"No"<<endl;
        }
    }
    else{
        if(ans==o[4]-'0'){
            cout<<"Yes"<<endl;
        }
        else{
            cout<<"No"<<endl;
        }
    }
}
signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0),cout.tie(0);
    cin>>t;
    while(t--){
        solve();
    }
    return 0;
}

Wa #5,#7,#8,#10