PDF

输出 #1：

Problem #1
2 square (s) of size 1
1 square (s) of size 2
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Problem #2
No completed squares can be found.

原：

Problem #1

2 square (s) of size 1
1 square (s) of size 2

**********************************

Problem #2

No completed squares can be found.

小心 PE！！！

@chen_zhe