blob: a89e0464f0530347e218087a4d9c4fd07eb9033b (
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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 range(len(stringa)):
if stringa[i] == '(':
t += 1
elif stringa[i] == '[':
q += 1
elif stringa[i] == '{':
g += 1
if stringa[i] == ')' and t > 0:
t -= 1
tot += 1
elif stringa[i] == ']' and q > 0:
q -= 1
tot += 1
elif stringa[i] == '}' and g > 0:
g -= 1
tot += 1
with open('output.txt', 'w') as fout:
fout.write(str(tot))
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