소스 코드 제출

#here is the 2025 11 27

# n=int(input())

# data=list(map(int,input().split()))

# for i in range(n):

# for j in range(i,n):

# print(data[j],end=' ')

# for j in range(i):

# print(data[j],end=' ')

# print()

data=list(input().split())

s=0

if data==(')'):

s=s+1

print(s)