2041_20T2_Q2

Posted on Edited on In Views: Word count in article: 7 Reading time ≈ 1 mins.

用set去重。

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#!/usr/bin/env python3

import sys

guys = set()
for line in sys.stdin:
    line = line.strip()
    if not line:
        continue
    field = line.split("|")
    id_and_name = field[1:3]
    guys.add(tuple(id_and_name))

# 循环结束后set里面就是一大堆人的id和名字的元组

# 接下来提取名字并截取后面的部分放到列表中，排序后再输出
ans = []
for id_name in guys:
    name = id_name[1]
    last_name = name.split(", ")[-1]
    last_name = last_name.split(" ")[0]
    ans.append(last_name)

ans.sort()
for last_name in ans:
    print(last_name)