from heapq import *
from collections import defaultdict
removed = set()
dic = defaultdict(list)
cnt = 1
C2S = [] #客番→席番
S2C = [-1] * 21 #席番→客番
cstm = 0
for _ in range(int(input())):
    t, *dat = list(input().split())
    t = int(t)
    if t == 0:
        seat, n, *dishes = dat
        seat = int(seat)
        C2S.append(seat)
        S2C[seat] = cstm
        for d in dishes:
            heappush(dic[d],(seat,cstm))
        cstm += 1
    elif t == 1:
        d = dat[0]
        if d in dic:
            while dic[d] and dic[d][0][1] in removed:
                _,_ = heappop(dic[d])
            if dic[d]:
                s,c = heappop(dic[d])
                print(C2S[c])
                cnt += 1
            else:
                print(-1)
                cnt += 1
        else:
            print(-1)
            cnt += 1
    else:
        seat = int(dat[0])
        removed.add(S2C[seat])
        S2C[seat] = -1