2021-12-20 19:04:33 +00:00
|
|
|
import sys
|
|
|
|
|
from collections import deque
|
|
|
|
|
D = { ">":"<", ")":"(", "]":"[","}":"{", }
|
2021-12-20 21:41:29 +00:00
|
|
|
S = { "(":1, "[":2, "{":3, "<":4, }
|
2021-12-20 19:04:33 +00:00
|
|
|
L = sys.stdin.read().splitlines()
|
|
|
|
|
N = []
|
|
|
|
|
for l in L:
|
2021-12-20 21:41:29 +00:00
|
|
|
Q = deque(["y"]) # add buffer to pop
|
2021-12-20 19:04:33 +00:00
|
|
|
fail = False
|
|
|
|
|
for c in l:
|
|
|
|
|
p = Q.pop()
|
|
|
|
|
if c in D: # if closing char
|
|
|
|
|
e = D[c]
|
|
|
|
|
if p != e: # fail case
|
|
|
|
|
fail = True
|
|
|
|
|
break
|
|
|
|
|
else: # just discard the pair
|
|
|
|
|
pass
|
|
|
|
|
else: # not closing
|
|
|
|
|
Q.append(p)
|
|
|
|
|
Q.append(c)
|
|
|
|
|
if not fail:
|
2021-12-20 21:41:29 +00:00
|
|
|
R = list(Q)[1:]
|
2021-12-20 19:04:33 +00:00
|
|
|
s = 0
|
|
|
|
|
for r in reversed(R):
|
|
|
|
|
s = s*5 + S[r]
|
|
|
|
|
N.append(s)
|
|
|
|
|
print(sorted(N)[len(N)//2])
|
