10001st prime
Problem 7
By listing the first six prime numbers: 2, 3, 5, 7, 11, and 13, we can see that the 6th prime is 13.
What is the 10 001st prime number?
使用埃拉托斯特尼筛法,不懂得自行Wiki
我的py...
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其他好文 时间:
2014-05-26 05:35:25
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248
题目一:
Given a binary tree containing digits from 0-9 only, each root-to-leaf
path could represent a number.
An example is the root-to-leaf path 1->2->3 which represents the number 123.
Fin...
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其他好文 时间:
2014-05-26 04:06:41
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简单数论题。区间减法。 1 //Accepted 0 KB 9 ms 2 #include 3
#include 4 using namespace std; 5 const int MAXN = 100005; 6 int f[MAXN]; 7 void
pre() 8 { 9 ...
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其他好文 时间:
2014-05-26 02:54:57
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278
题目:The sum of the squares of the first ten
natural numbers is,12 + 22 + ... + 102 = 385The square of the sum of the first
ten natural numbers is,(1 + ...
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其他好文 时间:
2014-05-26 02:15:16
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题目:2520 is the smallest number that can be
divided by each of the numbers from 1 to 10 without any remainder.What is the
smallest positive number that...
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其他好文 时间:
2014-05-26 02:12:53
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167
add two numbers without arithmetic
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2014-05-26 01:25:43
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Graphic SequenceA graphic sequence is a
sequence of numbers which can be thedegree sequenceof somegraph. A sequence can
be checked to determine if it ...
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其他好文 时间:
2014-05-25 19:18:00
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331
筛素数,分解质因子 1 //Accepted 620 KB 15 ms 2 //wa1 MAXN
太小了一开始用的10005; 3 //wa2 没判断素数 4 //wa3 分解质因子用的小于n 5 #include 6 #include 7 const
int MAXN = 1000...
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其他好文 时间:
2014-05-25 14:52:12
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Kuriyama Mirai has killed many monsters and got many (namely n) stones. She numbers the stones from 1 to n.
The cost of the i-th stone is vi.
Kuriyama Mirai wants to know something about these sto...
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其他好文 时间:
2014-05-25 07:24:48
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315
首先,在之前,我不是一个 Python玩家,我只是一个使用者,需要即取,现在,我要认真学习和记录,正确称为一个Python的玩家。
说明,这明显不是教程,是我自己理解并记录的笔记而已。
Python有五个标准的数据类型:
Numbers(数字)String(字符串)List(列表)Tuple(元组)Dictionary(字典)
数字有四种数值类型:int,long ,float...
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编程语言 时间:
2014-05-24 23:07:59
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387