Str = input("")
Left_bracket = 0
for i in Str:
if i== ‘(‘:
Left_bracket+=1
elif i== ‘)‘:
if Left_bracket>0:
Left_bracket-=1
else:
print("配对不成功")
break
else:
if Left_bracket!=0:
print("配对不成功")
else:
print("配对成功")

括号配对检测 A