-够了......9、10全是TLE ·-·

-到底怎么样才能够摆脱TLE的命运啊喂！！

-我不想再见到TLE的邪魅笑容了！！！

-大神快帮我敲敲看......到底哪不对了......

——————————前—言——————————

#include<iostream>
using namespace std;
struct ListNode{
    int val;
    ListNode*next;
    ListNode(int x):val(x),next(nullptr){}
};
ListNode*CLL(){
    ListNode*head=new ListNode(1);
    return head;
}
int FVA(ListNode* head,int targetVal){
    ListNode*cur=head;
    while(cur!=nullptr){
        if(cur->val==targetVal&&cur->next != nullptr){
            return cur->next->val;
        }
        cur=cur->next;
    }
    return 0;
}
ListNode*IAV(ListNode*head,int targetVal,int newVal){
    ListNode*cur=head;
    while(cur!=nullptr){
        if (cur->val==targetVal){
            ListNode*newNode=new ListNode(newVal);
            newNode->next=cur->next;
            cur->next=newNode;
            break;
        }
        cur=cur->next;
    }
    return head;
}
ListNode*DAV(ListNode* head,int t){
    ListNode*c=head;
    while(c!=nullptr){
        if(c->val==t&&c->next!=nullptr){
            ListNode*toDelete=c->next;
            c->next=c->next->next;
            delete toDelete;
            break;
        }
        c=c->next;
    }
    return head;
}
int main(){
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    int n,a,x,y;
    cin>>n;
    ListNode*head=CLL();
    while(n--){
        cin>>a;
        if(a==1){
            cin>>x>>y;
            head=IAV(head,x,y);
        }else if(a==2){
            cin>>x;
            cout<<FVA(head,x)<<"\n";
        }else if(a==3){
            cin>>x;
            head=DAV(head,x);
        }
    }
    return 0;
}