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QOJ

Time Limit: 3 s Memory Limit: 64 MB Total points: 100 Interactive

#591. Architekci

此題目在以下比賽中使用過：

XVI Olimpiada Informatyczna – II etap, Dzień drugi (POI 2008/2009 Stage 2, Day 2)

The problem is available in the following languages: C++