括号配对测试 20信计一班罗逸凡

stra = input("")
x = 0
z = 0
y = 0
for i in stra:
if i == '(':
x = x + 1
elif i == ')':
if x >= 0:
x = x - 1
else :
print("配对不成功")
if x != 0:
print("配对不成功")
else :
print("配对成功")

 

 

 学号：37