顺丰视觉第一题AC，第二题27%，没刷到类似的题，好伤心。
tmp = {'A':0,'B':0,'C':0,'D':0,'E':0,'F':0,'G':0,'H':0,'I':0,'J':0,'K':0,'L':0,'M':0,}
t_st = 'ABCDEFGHIJKLM'
while True:
try:
n = eval(input())
st = input()
num = list(map(eval, input().split()))
for i in range(len(t_st)):
if t_st[i] not in st:
tmp[t_st[i]] = num[i]
maxnum = tmp[sorted(tmp, key = lambda x:tmp[x])[-1]]
a = [key for key in tmp if tmp[key]==maxnum]
if len(a) == 1:
print(a[0])
else:
print(min(a))
except:
break #笔试题目##顺丰科技##计算机视觉岗#
