#include<stdio.h>
#include<stdbool.h>

#define MAX_EMPLOYEE_ID 10001

int main(){
    bool attendance[MAX_EMPLOYEE_ID]={false};
    int present_count=0;
    int q,query_tape,emp_id;
    
    scanf("%d", &q);
    
    while(q--){
        scanf("%d", &query_tape);
        if(query_type==4){
            printf("%d\n", present_count);
        } else {
            scanf("%d",&emp_id);
            if(emp_id>=0 && emp_id<MAX_EMPLOYEE_ID){
                if(query_type==1){
                    if(!attendance[emp_id]){
                        attendance[emp_id];
                            present_count--;
                        }
                    } else if(query_type==3){
                        if(attendance[emp_id]){
                            printf("Present\n");
                        } else{
                            printf("Not Present\n");
                        }
                    }
                }
            }
        }
     
    }
       return 0;
}