# WA

import sys
from collections import defaultdict as dfdict
input = sys.stdin.readline

N = int(input())
K = list(map(int, input().split()))
T = [0] * N
A = [[] for _ in [0] * N]
st = set([])
for i in range(N):
	T[i] = int(input())
	A[i] = list(map(int, input().split()))
	st |= set(A[i])
Alis = sorted(st)

ok = 0
ng = len(Alis)

def check():
	dic = dfdict(int)
	wild = []
	for lis in A:
		s = sum((k >= md) for k in lis)
		if(s == len(lis)):
			wild.append(s)
		else:
			dic[s] += 1
	if(wild and max(wild) >= min(K)):
		return True
	wild.sort(reverse = True)
	slis = sorted(dic.keys())
	for i, k in enumerate(K[::-1]):
		s = slis[-1] if(slis) else -1
		w = wild[0] if(wild) else -1
		if(max(s, w) >= k):
			break
		elif(s == k - 1):
			dic[s] -= 1
			if(dic[s] == 0):
				slis.pop()
		elif(wild):
			wild.pop()
		else:
			return False
	return True

while(ng - ok > 1):
	mid = (ok + ng) >> 1
	md = Alis[mid]
	if check():
		ok = mid
	else:
		ng = mid

ans = Alis[ok]
print(ans)