Problem 25 The Fibonacci sequence is defined by the recurrence relation: Fn = Fn−1 + Fn−2, where F1 = 1 and F2 = 1.Hence the first 12 terms will be: F1 = 1F2 = 1F3 = 2F4 = 3F5 = 5F6 = 8F7 = 13F8 = 21F9 = 34F10 = 55F11 = 89F12 = 144The 12th term, F12,…

题目链接:http://www.codeforces.com/problemset/problem/25/A题意:在n个书中找到唯一一个奇偶性和其他n-1个数不同的数.C++代码: #include <iostream> using namespace std; ; , y = -; int main() { cin >> n; ; i <= n; i ++) { cin >> a; == ) x = (x == -) ? i : -; else y = (y =…

Source: PAT A1150 Travelling Salesman Problem (25 分) Description: The "travelling salesman problem" asks the following question: "Given a list of cities and the distances between each pair of cities, what is the shortest possible route that…

There are some Common Bugs in C Programming. Most of the contents are directly from or modified from Prof. Liu Pangfeng's blog. Most credits should go to him. For all the following problems, answer the output message of the code, unless they are spec…

Count Pairs Description You are given n circles centered on Y-aixs. The ith circle’s center is at point (i, 0) and its radius is A[i]. Count the number of pairs of circles that have at least one common point? Input The input should be a list of n pos…

4C(容斥) http://noi.ac/contest/56/problem/25 同时交换一行或一列对答案显然没有影响,于是将行列均从大到小排序,每次处理限制相同的一段行列(呈一个L形). 问题变成,决定这个L形中每个位置的高度,是每个位置都不超出所在行列的限制,且每行每列都有至少一个位置达到最高限制. 容斥,暴力枚举有多少行多少列没有任何一个位置达到最高限制,这些行列中的位置都只能取到0~h.其余L形中的位置都无限制,即能取到0~h+1. #include<cstdio> #includ…

[图论01]最短路 Start Time : 2018-01-02 12:45:00    End Time : 2018-01-23 12:45:00 Contest Status : Running Current System Time : 2018-01-12 14:39:34 Solved Problem ID Title Ratio(Accepted / Submitted)   1001 最短路 51.85%(70/135)   1002 King 46.67%(35/75)  …

Source: PAT (Advanced Level) Practice Reference: [1]胡凡,曾磊.算法笔记[M].机械工业出版社.2016.7 Outline: 基础数据结构: 线性表:栈,队列,链表,顺序表 树:二叉树的建立,二叉树的遍历,完全二叉树,二叉查找树,平衡二叉树,堆,哈夫曼树 图:图的存储和遍历 经典高级算法: 深度优先搜索,广度优点搜索,回溯剪枝 贪心,并查集,哈希映射 最短路径(只考察过单源),拓扑排序(18年9月第一次涉及相关概念,未正式考过),关键路径(未…

先过一下Hard模式的题目吧.   # Title Editorial Acceptance Difficulty Frequency   . 65 Valid Number     12.6% Hard    . 126 Word Ladder II     13.6% Hard    . 149 Max Points on a Line     15.6% Hard    . 146 LRU Cache     16.0% Hard    . 68 Text Justification  …

接上一篇:http://www.cnblogs.com/charlesblc/p/6283064.html 继续过Hard模式的题目吧.   # Title Editorial Acceptance Difficulty Frequency   . 65 Valid Number     12.6% Hard    . 126 Word Ladder II     13.6% Hard    . 149 Max Points on a Line     15.6% Hard    . 146 L…