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10339 - Watching Watches Time limit: 3.000 seconds It has been said that a watch that is stopped keeps better time than one that loses 1 second per da 阅读全文
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substr()函数: VFP字符函数的一种。表示的是字符型函数。格式是:SUBSTR(<字符表达式>、<数值表达式1>[,<数值表达式2>] 中文名:子串截取函数 外文名:SUBSTR 返回值类型:字符型 SUBSTR(cExpression,nStartPosition [,nCharacter 阅读全文
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曼哈顿距离: 是由十九世纪的赫尔曼·闵可夫斯基所创词汇 ,是种使用在几何度量空间的几何学用语,用以标明两个点在标准坐标系上的绝对轴距总和。 曼哈顿距离——两点在南北方向上的距离加上在东西方向上的距离,即d(i,j)=|xi-xj|+|yi-yj|。 对于一个具有正南正北、正东正西方向规则布局的城镇街 阅读全文
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C. Watchmen time limit per test 3 seconds memory limit per test 256 megabytes input standard input output standard output Watchmen are in a danger and 阅读全文
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B. Beautiful Paintings time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output B. Beautiful Paint 阅读全文
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A. Joysticks time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Friends are going to play co 阅读全文
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C. Tourist's Notes time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output C. Tourist's Notes ti 阅读全文
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B. Quasi Binary time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output B. Quasi Binary time lim 阅读全文
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A. Cutting Banner time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output A. Cutting Banner time 阅读全文
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C. Block Towers time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Students in a class are 阅读全文