组合数学题目
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【HDU】2049不容易系列之(4)——考新郎-错位排列+组合数
Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 47272 Accepted Submission(s): 17372 Problem Description 国庆期间,省城HZ刚刚举行了一场盛大的集体...原创 2018-08-16 16:46:20 · 215 阅读 · 0 评论 -
【POJ】1091跳蚤-容斥定理
Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 11254 Accepted: 3528 DescriptionZ城市居住着很多只跳蚤。在Z城市周六生活频道有一个娱乐节目。一只跳蚤将被请上一个高空钢丝的正中央。钢丝很长，可以看作是无限长。节目主持人会给该跳蚤发一张卡片。卡片上写有N+1...原创 2018-08-16 15:17:13 · 207 阅读 · 0 评论 -
【HDU】4407Sum-容斥原理加特判
Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 4264 Accepted Submission(...原创 2018-08-16 10:38:40 · 214 阅读 · 0 评论 -
【POJ】2084Game of Connections（大数的卡特兰数处理）
Time Limit: 1000MS Memory Limit: 30000K Total Submissions: 9193 Accepted: 4506 DescriptionThis is a small but ancient game. You are supposed to write down the numbers 1, 2, 3, . ...原创 2018-08-15 11:40:34 · 323 阅读 · 0 评论 -
【POJ】1306Combinations-组合数
Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 10217 Accepted: 4658 DescriptionComputing the exact number of ways that N things can be taken M at a time can be a grea...原创 2018-08-15 09:52:15 · 173 阅读 · 0 评论 -
【HDU】4059 The Boss on Mars-容斥原理+逆元+快速幂+质因子分解+四次方程求和公式
Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 3297 Accepted Submission(s): 1084 Problem Description On Mars, there is a hug...原创 2018-08-14 22:07:00 · 223 阅读 · 0 评论 -
【POJ】3370Halloween treats鸽巢原理
Time Limit: 2000MS Memory Limit: 65536K Total Submissions: 9405 Accepted: 3365 Special Judge DescriptionEvery year there is the same problem at Halloween: Each neighbour ...原创 2018-08-14 20:18:06 · 198 阅读 · 0 评论 -
【POJ】2356-Find a multiple-鸽巢原理
Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 9080 Accepted: 3896 Special Judge DescriptionThe input contains N natural (i.e. positive integer) numbers ( N &...原创 2018-08-14 19:22:34 · 162 阅读 · 0 评论 -
【HDU】4349Xiao Ming's Hope-Lucas定理推导
Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 2618 Accepted Submissio...原创 2018-08-14 15:24:12 · 183 阅读 · 0 评论 -
【HDU】1205 吃糖果-抽屉原理，鸽巢原理
Time Limit: 6000/3000 MS (Java/Others) Memory Limit: 65535/32768 K (Java/Others) Total Submission(s): 47459 Accepted Submission(s): 13538 Problem Description HOHO，终于从Speakless手上赢走...原创 2018-08-14 11:26:14 · 304 阅读 · 0 评论 -
【HDU】1695 GCD（容斥原理+线形欧拉函数）
Time Limit: 6000/3000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 15373 Accepted Submiss...原创 2018-08-14 10:10:10 · 232 阅读 · 0 评论 -
【HUD】5698瞬间移动-组合数学计数性问题
Time Limit: 4000/2000 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others) Total Submission(s): 1918 Accepted Submission(s): 866 Problem Description 有一个无限大的矩形，初始时你在左上角（即第一行第一...原创 2018-08-13 22:05:38 · 331 阅读 · 0 评论 -
【HDU】1796 How many integers can you find容斥原理求解（dfs方法）
Time Limit: 12000/5000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 10810 Accepted Submission(s): 3213 Problem Description Now you get a numbe...原创 2018-08-13 20:40:46 · 203 阅读 · 0 评论 -
容斥原理及其应用解释
感谢大佬！！对容斥原理的描述容斥原理是一种重要的组合数学方法，可以让你求解任意大小的集合，或者计算复合事件的概率。描述 容斥原理可以描述如下： 要计算几个集合并集的大小，我们要先将所有单个集合的大小计算出来，然后减去所有两个集合相交的部分，再加回所有三个集合相交的部分，再减去所有四个集合相交的部分，依此类推，一直计算到所有集合相交的部分。关...原创 2018-08-13 11:22:41 · 1341 阅读 · 0 评论 -
【HDU】4135Co-prime-质数分解+容斥原理+二进制枚举
Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 7488 Accepted Submissi...原创 2018-08-13 11:16:55 · 228 阅读 · 0 评论 -
【HDU】2067-小兔的棋盘
Time Limit: 1000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 12794 Accepted Submissi...原创 2018-08-13 10:02:08 · 344 阅读 · 0 评论