#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <string.h>
#include <stdlib.h>

int main() {
    int set = 0;
    int N;
    scanf("%d",&N);
    getchar();
    while(N--) {
        char str[20];
        if (fgets(str, sizeof(str), stdin) == NULL) break;
        if (str[0] == '\n') { N++; continue; }
        str[strcspn(str, "\n")] = 0;
        char *opcode = strtok(str, " ");
        char *operend = strtok(NULL, " ");
        
        if(!strcmp(opcode, "add")) {
            set |= 1 << (atoi(operend)-1);
        } else if(!strcmp(opcode, "remove")) {
            set &= ~(1 << (atoi(operend)-1));
        } else if(!strcmp(opcode, "check")) {
            printf("%d\n",set & (1 << (atoi(operend)-1)) ? 1 : 0);
        } else if(!strcmp(opcode, "toggle")) {
            set ^= 1 << (atoi(operend)-1);
        } else if(!strcmp(opcode, "all")) {
            set = (1<<20) - 1;
        } else if(!strcmp(opcode, "empty")) {
            set = 0;
        }
    }
    return 0;
}