blob: e4967a9125ceee5ed3c11b1cf6279617efdb6b5e (
plain)
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stringa = []
with open('input.txt', 'r') as fin:
linea = fin.readline()
for i in linea:
if i is not ' ':
stringa.append(i)
t = q = g = 0
tot = 0
for i in stringa:
if i == '(':
t += 1
elif i == '[':
q += 1
elif i == '{':
g += 1
if i == ')' and t > 0:
t -= 1
tot += 1
elif i == ']' and q > 0:
q -= 1
tot += 1
elif i == '}' and g > 0:
g -= 1
tot += 1
with open('output.txt', 'w') as fout:
fout.write(str(tot))
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