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#6587. 三角形的教学楼
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The problem was used in the following contests:
IOI 2008 中国国家队选拔赛暨精英赛 (CTSC 2008) Day 1
Upload a .zip file containing triangle1.out,triangle2.out,triangle3.out,triangle4.out,triangle5.out,triangle6.out,triangle7.out,triangle8.out,triangle9.out,triangle10.out:
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