Description
In the late 1700s', Gauss, a famous mathematician, found a special kind of numbers. These integers are all in the form:
a + b .The sum and multiplication ofthese integers can be natura...
分类：
其他好文 时间：
2014-08-26 11:46:25
阅读次数：
237
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#define inf 0x3f3f3f3f
#pragma comment(linker, "/STACK:16777216")
#define eps 1e-6
#define ll long l...
分类：
其他好文 时间：
2014-08-25 22:59:45
阅读次数：
524
LeetCode: TriangleGiven a triangle, find the minimum path sum from top to bottom. Each step you may move to adjacent numbers on the row below. For exa...
分类：
其他好文 时间：
2014-08-25 22:48:14
阅读次数：
306
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：
2014-08-25 22:43:04
阅读次数：
266
Given a m x n grid filled with non-negative numbers, find a path from top left to bottom right which minimizes the sum of all numbers along its path.N...
分类：
其他好文 时间：
2014-08-25 20:41:44
阅读次数：
192
http://acm.timus.ru/problem.aspx?space=1&num=1586
题意没看懂，看了别人的翻译。threeprime number的意思是任意三个连续的数组成的一个三位数是素数，注意必须是三位数。给出n，问满足条件的n位数有多少个。
先把三位数的素数筛选出来并标记，设dp[i][j][k]表示到i位为止，最后两位是j和k的满足条件的数的个数。
...
分类：
其他好文 时间：
2014-08-25 19:15:44
阅读次数：
161
这是题目的答案#include#includeusing namespace std;int a[45002];int b[45002];int mod(int a, int b, int c){ int z = 1; while(b) { if(b%2) ...
分类：
其他好文 时间：
2014-08-25 13:20:14
阅读次数：
132
题目链接The problem is quite simple. You're given a number N and a positive integer K. Tell if N can be represented as a sum of K prime numbers (not neces...
分类：
其他好文 时间：
2014-08-25 13:19:04
阅读次数：
270
Problem 34
145 is a curious number, as 1! + 4! + 5! = 1 + 24 + 120 = 145.
Find the sum of all numbers which are equal to the sum of the factorial of their digits.
Note: as 1! = 1 and 2! = 2 are...
分类：
其他好文 时间：
2014-08-25 11:59:14
阅读次数：
243
Problem 36
The decimal number, 585 = 10010010012 (binary), is palindromic in both bases.
Find the sum of all numbers, less than one million, which are palindromic in base 10 and base 2.
(Please...
分类：
其他好文 时间：
2014-08-25 10:06:04
阅读次数：
198
