#40516: python


mountainwu14@gmail.com (吳小四)


n=int(input());stack=[]

for i in range(n):
    word=input();count=0
    
    for j in range(len(word)-1):
        if (len(stack)!=0 and stack[-1]=="(" and word[j]==")" ):
            stack.pop()
            count+=1
        else:
            stack.append(word[j])
    
    if (len(stack)!=0):count=0
    print(count)