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FD_CLOEXEC用法及原因_转
转自:使用FD_CLOEXEC实现close-on-exec,关闭子进程无用文件描述符 我们经常会碰到需要fork子进程的情况,而且子进程很可能会继续exec新的程序。这就不得不提到子进程中无用文件描述符的问题! fork函数的使用本不是这里讨论的话题,但必须提一下的是:子进程以写时复制(COW,C ...
分类:其他好文   时间:2017-04-23 20:10:20    阅读次数:125
poj3278 Catch That Cow
Description Farmer John has been informed of the location of a fugitive cow and wants to catch her immediately. He starts at a point N (0 ≤ N ≤ 100,00 ...
分类:其他好文   时间:2017-04-23 18:15:02    阅读次数:135
[USACO06JAN]牛的舞会The Cow Prom
题目描述 The N (2 <= N <= 10,000) cows are so excited: it's prom night! They are dressed in their finest gowns, complete with corsages and new shoes. They ...
分类:其他好文   时间:2017-04-23 15:46:01    阅读次数:176
bfs hdu 2717 Catch That Cow
Catch That Cow Time Limit: 5000/2000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 14553 Accepted Submission(s): 4422 ...
分类:其他好文   时间:2017-04-22 22:40:18    阅读次数:192
POJ 3615 Cow Hurdles
http://poj.org/problem?id=3615 floyd 最短路径的变形 dist[i][j]变化为 : i j之间的最大边 那么输入的时候可以直接把dist[i][j] 当作i j 之间的边进行输入 转移方程 dist[i][j] = max(dist[i][j], min(dis ...
分类:其他好文   时间:2017-04-21 21:40:01    阅读次数:150
【POJ3615】Cow Hurdles 最短路,你若LCA,我仍不拦你。
NOIP2013货车运输。仅仅只是数据范围小了很多。 不到150s打完而且AC。。 额。当然。我写的是Floyd。 写LCA的真过分。 #include <cstdio> #include <cstring> #include <algorithm> #define N 305 #define in ...
分类:其他好文   时间:2017-04-21 20:15:33    阅读次数:164
hdu 2717 Catch That Cow
恢复内容开始 Catch That Cow Time Limit: 5000/2000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 14433 Accepted Submission(s ...
分类:其他好文   时间:2017-04-18 22:59:26    阅读次数:228
USACO 6.3 Cryptcowgraphy
The cows of Farmer Brown and Farmer John are planning a coordinated escape from their respective farms and have devised a method of encryption to prot ...
分类:其他好文   时间:2017-04-16 12:08:58    阅读次数:227
poj3278Catch That Cow
Catch That Cow Time Limit: 2000MS Memory Limit: 65536K Total Submissions: 88361 Accepted: 27679 Description Farmer John has been informed of the locat ...
分类:其他好文   时间:2017-04-14 23:56:45    阅读次数:304
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