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搜索关键字:nearly prime numbers    ( 9679个结果
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
uva 1530 - Floating Point Numbers(数论)
题目链接:uva 1530 - Floating Point Numbers 题目大意:给出一个16位的二进制数,用来表示一个浮点数,第一位为符号,1~7位表示一个十进制的数s,e=63-s;剩下的8位为小数部分,默认整数部分为1,得到f,然后最后a=f*2^e,要求用科学计数法输出a。 解题思路:模拟就好了,注意0的情况特殊处理,以及科学计数法的整数部分不能为0. ...
分类:其他好文   时间:2014-07-22 23:02:13    阅读次数:250
PAT 1069. The Black Hole of Numbers (20)
1069. The Black Hole of Numbers (20)
分类:其他好文   时间:2014-05-05 23:45:49    阅读次数:365
【LeetCode OJ】Sum Root to Leaf Numbers
# Definition for a binary tree node# class TreeNode:# def __init__(self, x):# self.val = x# self.left = None# self.right ...
分类:其他好文   时间:2014-05-05 22:56:23    阅读次数:419
Next Permutation
Implement next permutation, which rearranges numbers into the lexicographically next greater permutation of numbers.If such arrangement is not possibl...
分类:其他好文   时间:2014-05-05 22:19:17    阅读次数:312
codechef Turbo Sort 题解
Input t – the number of numbers in list, then t lines follow [t  Each line contains one integer: N [0 N  Output Output given numbers in non decreasing order. Example Input: 5 5 3 ...
分类:其他好文   时间:2014-05-04 00:04:09    阅读次数:376
[Unity3D]引擎崩溃、异常、警告、BUG与提示总结及解决方法
1.U3D经常莫名奇妙崩溃。一般是由于空异常造成的,多多检查自己的引用是否空指针。2.编码切换警告提示。警告提示:Some are Mac OS X (UNIX) and some are Windows.This might lead to incorrect line numbers in st...
分类:其他好文   时间:2014-05-02 14:27:11    阅读次数:752
UVA 之401 - Palindromes
A regular palindrome is a string of numbers or letters that is the same forward as backward. For example, the string "ABCDEDCBA" is a palindrome because it is the same when the string is read from lef...
分类:其他好文   时间:2014-05-02 10:33:09    阅读次数:332
UVA之11292 Dragon of Loowater
Problem C: The Dragon of Loowater Once upon a time, in the Kingdom of Loowater, a minor nuisance turned into a major problem. The shores of Rellau Creek in central Loowater had always been a prime...
分类:其他好文   时间:2014-05-02 10:07:09    阅读次数:402
欧拉计划21-23题
21、Amicable numbersLet d(n) be defined as the sum of proper divisors ofn(numbers less thannwhich divide evenly inton). If d(a) =band d(b) =a, whereab,...
分类:其他好文   时间:2014-05-02 09:28:12    阅读次数:776
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