# [Python 2], <s>123</s> <s>112</s> <s>110</s> <s>109</s> <s>100</s> 98 bytes

<!-- language-all: lang-python -->

    i=n=input()
    while i:a=i%2;print' '*(n-i)+'\%s/'%['_',((-~i/2)*'/   \  |'[a::2])[a:-1-a]][i>1];i-=1

[Try it online!][TIO-j9e9u9uq]

[Python 2]: https://docs.python.org/2/
[TIO-j9e9u9uq]: https://tio.run/##DcXBCgIhFAXQfV/xNvJ0SkRX4WA/4ki4COZCvKSMGBj6detsTtv6@pAwBpIkSHt3bQ6fFfcbIdYEFeb2hHQmnrRYmCMv6uVYZb7ySWv7hQtmYkdEC9HOucYYivlnva2lZFx8mWGTH@P8Aw "Python 2 – Try It Online"

Saved a bunch of bytes by using input and string formatting as in [Rod's answer](https://codegolf.stackexchange.com/a/146648/38592)