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HDU - 4135 Co-prime
题意:求[a,b]与n互质的个数 思路:容斥原理的运用,提取n的素因子,先算出不与n互素的个数,容斥原理奇加偶减 #include #include #include #include #define ll long long using namespace std; const int MAXN = 70; ll prime[MAXN]; ll a,b,n; ll make(l...
分类:其他好文   时间:2014-07-22 23:05:55    阅读次数:315
POJ 3239 n皇后放置问题
以前那个是8皇后问题,用的递归写法,然后这个可以求n皇后放置问题,用的纯粹数学方法……神奇! #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #d...
分类:其他好文   时间:2014-07-22 23:04:55    阅读次数:205
POJ 3352 Road Construction 使得无向图边变双连通图
点击打开链接 Road Construction Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 8168   Accepted: 4106 Description It's almost summer time, and that means that...
分类:其他好文   时间:2014-07-22 23:04:33    阅读次数:277
[hdu-2043] 密码
密码 Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 28265    Accepted Submission(s): 11263 Problem Description 网上流传一句话:"常在网上飘啊,哪...
分类:其他好文   时间:2014-07-22 23:03:15    阅读次数:291
poj 2299 Ultra-QuickSort
Ultra-QuickSort Time Limit: 7000MS   Memory Limit: 65536K Total Submissions: 38588   Accepted: 13903 Description In this problem, you have to analyze a particular sorti...
分类:其他好文   时间:2014-07-22 23:02:34    阅读次数:303
POJ 1463 Strategic game 最小点覆盖集(树形dp)
点击打开链接 Strategic game Time Limit: 2000MS   Memory Limit: 10000K Total Submissions: 6105   Accepted: 2808 Description Bob enjoys playing computer games, especially st...
分类:其他好文   时间:2014-07-22 23:01:55    阅读次数:304
[hdu-2044] 一只小蜜蜂
一只小蜜蜂... Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 36202    Accepted Submission(s): 13302 Problem Description 有一只经过训练的蜜蜂只能爬...
分类:其他好文   时间:2014-04-30 22:48:40    阅读次数:221
[hdu-2045] 不容易系列之(3)—— LELE的RPG难题
不容易系列之(3)—— LELE的RPG难题 Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 28032    Accepted Submission(s): 11192 Problem Description ...
分类:其他好文   时间:2014-04-30 22:45:38    阅读次数:265
[hdu-2046] 骨牌铺方格
骨牌铺方格 Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 27095    Accepted Submission(s): 13089 Problem Description 在2×n的一个长方形方格中,用一...
分类:其他好文   时间:2014-04-30 22:38:40    阅读次数:290
[ACM] poj 1700 Crossing River (经典过河问题)
Crossing River Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 10212   Accepted: 3855 Description A group of N people wishes to go across a river with only one...
分类:其他好文   时间:2014-04-30 22:21:38    阅读次数:212
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