[그리디][파이썬][백준] 1541번 잃어버린 괄호

# 잃어버린 괄호
sik = input().split('-')
k = 0
plst = []

for i in sik:
    plst = map(int,i.split('+'))

    k += sum(plst)

k = -k
k += 2*int(sum(map(int,sik[0].split('+'))))

print(k)

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