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Hạ sĩ
Tìm a,b nguyên dương:
$a^{2}-2\vdots ab+2$
A naughty girl
Thiếu úy
Tìm a,b nguyên dương: $a^{2}-2\vdots ab+2$
Bạn tham khảo ở đây nhé
"I am the bone of my sword,
Unknown to Death, Nor known to Life,
So as I pray, unlimited blade works."
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