摘要：
Barney is standing in a bar and starring at a pretty girl. He wants to shoot her with his heart arrow but he needs to know the distance between him an... 阅读全文
posted @ 2016-07-15 13:19
_Wilbert
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摘要：
Barney lives in NYC. NYC has infinite number of intersections numbered with positive integers starting from 1. There exists a bidirectional road betwe... 阅读全文
posted @ 2016-07-15 13:06
_Wilbert
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