这是一道使用了 PDF 题面的测试题，用于测试能否正常显示 PDF 题面。
同时，这也是一道提交答案题，你可以使用这道题目来测试提交答案题的提交。
Public Judge
pjudge
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Total points:
100
Output Only
# 21607. 【PTR #1】Nowruz
Statistics
The problem was used in the following contest:
or upload files one by one: