#include<stdio.h>
#include<stdlib.h>
#include<string.h>
struct Node{
    int id;
    int priority;
    struct Node* next;
};
struct Node* head=NULL;
struct Node* createNode(int id,int priority){
    struct Node* newNode=(struct Node*)malloc(sizeof(struct Node));
newNode->id=d;
neweNode->priority=priority;
newNode->next=NULL;
return newNode;
}
void insert(int id,int priority){
    struct Node* newNode= createNode(id,priority){
        if(head==NULL||priority>head->priority){
            newNode->next=head;
            head=newNode;
            return ;
        }
        struct Node* curr=head;
        while(curr->next!=NULL && curr->next->priority>=priority){
            curr=curr->next;
        }
        newNode->next=curr->next;
        curr->next=newNode;
}
void deleteHighest(){
    if(head==NULL){
        printf("Queue id empty");
        return ;
    }
    struct Node* temp=head;
    printf("%d\n",temp->id);
    head=head->next;
    free(temp);
}
int main(){
    int N;
    scanf("%d",&N);
    for(int i=0;i<N;i++){
        char operation[10];
        scanf("%s",operation);
        if(strcmp(opration,"INSERT")==0){
            int id,priority;
            scanf("%d %d",&id,&priority);
            insert(id,priority);
        }
        else if(strcmp(operation,"DELETE")==0){
            deleteHighest();
        }
    }
    return 0;
}