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attack finish attack finish attack finish attack start attack finish attack start attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack finish attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack finish attack finish attack start attack start attack start attack start attack start 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attack start attack start attack start attack start attack start attack finish attack finish attack finish attack finish attack finish attack finish attack start attack start attack start attack start attack start attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack finish attack finish attack start attack start attack start attack start attack start attack start attack start attack start attack start attack finish attack finish attack finish attack start attack start attack start attack start attack start attack start attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack finish attack finish attack start attack start attack start attack start attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack finish attack start attack start attack start attack start attack start attack start attack start attack start attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack start attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack start attack finish attack start attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack finish attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack finish attack finish attack start attack start attack start attack start attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack finish attack finish attack start attack start attack start attack start attack start attack start attack start attack start attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack finish attack finish attack start attack start attack start attack start attack start attack start attack start attack start attack finish attack finish attack finish attack finish attack finish attack finish attack start attack start attack start attack start attack start attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack finish attack finish attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack finish attack finish attack start attack start attack start attack start attack start attack start attack start attack finish attack finish attack finish attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack finish attack finish attack finish attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack finish attack start attack finish attack start attack start attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack start attack start attack start attack start attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack finish attack finish attack start attack start attack start attack start attack start attack finish attack finish attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack start attack start attack start attack start attack start attack start attack start attack finish attack finish attack finish attack finish attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack finish attack finish attack finish attack finish attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack start attack start attack start attack start attack start attack start attack start attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish 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start attack finish attack start attack start attack finish attack finish attack finish attack finish attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack finish attack finish attack finish attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack start attack start attack start attack start attack finish attack finish attack finish attack finish attack start attack start 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finish attack start attack finish attack start attack finish attack start attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack 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attack start attack start attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack finish attack finish attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack finish attack start attack finish attack start attack 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attack start attack start attack start attack start attack start attack start attack start attack start attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack 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attack start attack finish attack start attack finish attack start attack finish attack start attack start attack finish attack finish attack start attack start attack start attack start attack start attack start attack start attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack start attack start attack start attack start attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack start attack finish attack start attack start attack finish attack start attack finish attack finish attack start attack finish attack start attack finish attack start attack start attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack finish attack finish attack start attack start attack start attack start attack start attack start attack start attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack start attack start attack start attack start attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack finish attack finish attack start attack start attack start attack start attack start attack start attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack start attack start attack start attack start attack start attack start attack finish attack finish attack finish attack finish attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack start attack start attack start attack start attack start attack start attack start attack finish attack finish attack finish attack finish attack finish attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack finish attack finish attack finish attack start attack finish attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack start attack start attack start attack start attack start attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack start attack finish attack start attack finish attack start attack start attack finish attack start attack finish attack start attack start attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack finish attack finish attack finish attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack start attack start attack start attack start attack start attack start attack start attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack finish attack finish attack start attack start attack start attack start attack start attack start attack start attack start attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack start attack start attack start attack start attack start attack start attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack finish attack finish attack start attack start attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack finish attack finish attack start attack start attack start attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack finish attack finish attack start attack start attack start attack start attack start attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack finish attack finish attack finish attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack finish attack start attack start attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack finish attack start attack finish attack start attack start attack finish attack finish attack start attack finish attack start attack finish attack start attack finish attack"
kek = ['(' if word == 'start' else ')' for word in data.split() if word != 'attack']
e = ''.join(kek)
print(e)
print(len(e))
print(e.count('('))
print(len(data.split())//4)
n = 2020
C = 1
for i in range(1, n + 1):
    C = (2*(2*i-1)*C) // (i + 1)
print(C)