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#!/usr/bin/env python3
import sys
count=0
for line in sys.stdin:
line=line[:-1].replace("]","[").split("[")
p1=line[0::2]
p2=line[1::2]
p2bab=set()
for bl in p2:
for i in range(len(bl)-2):
if bl[i]==bl[i+2] and bl[i]!=bl[i+1]:
p2bab.add(bl[i:i+3])
for bl, i in ((bl,i) for bl in p1 for i in range(len(bl)-2)):
if bl[i]==bl[i+2] and bl[i]!=bl[i+1] and "".join([bl[i+1],bl[i],bl[i+1]]) in p2bab:
count+=1
break
print(count)
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