A family hierarchy is usually presented by a pedigree tree. Your job is to count those family members who have no child.InputEach input file contains ...
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其他好文 时间：
2015-03-08 01:25:46
阅读次数：
163
DescriptionFreddy Frog is sitting on a stone in the middle of a lake. Suddenly he notices Fiona Frog who is sitting on another stone. He plans to visi...
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其他好文 时间：
2015-03-07 15:32:03
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166
1639. Chocolate 2
Time limit: 1.0 second
Memory limit: 64 MB
Little Boy is mad at Karlsson, who ate all the sweets in the flat and even went to the neighbours to eat their sweets too. Now...
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其他好文 时间：
2015-03-06 15:55:20
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124
Save the StudentsTime Limit:134MS Memory Limit:0KB 64bit IO Format:%lld & %lluDescriptionHogwarts is under attack by the Dark Lord, He-Who-Must-Not-Be...
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编程语言 时间：
2015-03-05 22:07:12
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224
Being unique is so important to people on Mars that even their lottery is designed in a unique way. The rule of winning is simple: one bets on a number chosen from [1, 104]. The first one who bets on ...
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其他好文 时间：
2015-03-05 13:02:13
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126
今天来讲Awk的使用，首先来介绍awk的工作原理。
Awk的工作原理：将文件一行一行读入，然后对每一行再分段，段名称为$加上数字，分段依据是空格或者Tab键。
用法：awk '/模式/{命令1;命令2;...}' filename
其中上面的模式没有的话就是对全文所有行进行操作，多条命令用分号隔开。
例如who命令结果如下
比如我们想得到日期，那么命令...
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其他好文 时间：
2015-03-04 22:47:42
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229
DescriptionThe Joseph's problem is notoriously known. For those who are not familiar with the original problem: from among n people, numbered 1, 2, . ...
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其他好文 时间：
2015-03-04 20:51:20
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162
FreeImage简介FreeImage is an Open Source library project for developers who would like to support popular graphics image formats like PNG, BMP, JPEG, TIFF and others as needed by today's multimedia appl...
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其他好文 时间：
2015-03-04 19:16:04
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301
Zhejiang University has 40000 students and provides 2500 courses. Now given the student name lists of all the courses, you are supposed to output the registered course list for each student who comes ...
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其他好文 时间：
2015-03-04 12:58:12
阅读次数：
177
