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#12669. 调兵遣将
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The problem was used in the following contests:
(China) National Olympiad in Informatics 2007 Day 1 (NOI 2007 Day 1)
Upload a .zip file containing surround1.out,surround2.out,surround3.out,surround4.out,surround5.out,surround6.out,surround7.out,surround8.out,surround9.out,surround10.out:
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