C. Rectangle Puzzle Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/281/problem/C Description You are given two rectangles on a plane. The centers of both rectangles are located in the origin of coordinates (meaning the cen…

B. Nearest Fraction Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/281/problem/B Description You are given three positive integers x, y, n. Your task is to find the nearest fraction to fraction  whose denominator is no mor…

题目链接:http://www.codeforces.com/problemset/problem/281/A题意:将一个英文字母的首字母变成大写,然后输出.C++代码: #include <cstdio> #include <cstring> ]; void solve(char *s) { if (*s >= 'a' && *s <= 'z') *s -= ; while (*s) { putchar(*s); s ++; } } int main(…

http://codeforces.com/contest/281/problem/D 要求找出一个区间,使得区间内第一大的数和第二大的数异或值最大. 首先维护一个单调递减的栈,对于每个新元素a[i].要么直接插入后面,如果它插入栈内的某个元素的话.就是说有数字弹出来了,这个时候这个数字和a[i]组成的就是区间第一.第二大,9 8 5 4 3 2 1 7这样,最后那个7,弹出1,证明[7,8]这个区间第一.第二大的数字分别是1.和7,其他类似. 还有一个地方要注意的是: 要特别处理那些不能弹出的…

A. Word Capitalization 模拟. B. Nearest Fraction 枚举. C. Rectangle Puzzle 求出两个矩形的点,套简单多边形的面积交板子. D. Maximum Xor Secondary 枚举位置做为次大值,那么分别向左右两个方向找到第一个比当前值大的值即可. E. Game on Tree…

A. Word Capitalization 模拟. B. Nearest Fraction 枚举. C. Rectangle Puzzle 求出两个矩形的点,套简单多边形的面积交板子. D. Maximum Xor Secondary 枚举位置做为次大值,那么分别向左右两个方向找到第一个比当前值大的值即可. E. Game on Tree D. k-Maximum Subsequence Sum 做法一: 对于线段树上的每个区间,维护4个值: \(ms[i]\)表示取了\(i\)个区间的最大值…

Codeforces Round #366 (Div. 2) A I hate that I love that I hate it水题 #I hate that I love that I hate it n = int(raw_input()) s = "" a = ["I hate that ","I love that ", "I hate it","I love it"] for i in ran…

Codeforces Round #354 (Div. 2) Problems     # Name     A Nicholas and Permutation standard input/output 1 s, 256 MB    x3384 B Pyramid of Glasses standard input/output 1 s, 256 MB    x1462 C Vasya and String standard input/output 1 s, 256 MB    x1393…

直达–>Codeforces Round #368 (Div. 2) A Brain’s Photos 给你一个NxM的矩阵,一个字母代表一种颜色,如果有”C”,”M”,”Y”三种中任意一种就输出”#Color”,如果只有”G”,”B”,”W”就输出”#Black&White”. #include <cstdio> #include <cstring> using namespace std; const int maxn = 200; const int INF =…

 cf之路,1,Codeforces Round #345 (Div. 2) ps:昨天第一次参加cf比赛,比赛之前为了熟悉下cf比赛题目的难度.所以做了round#345连试试水的深浅.....       其实这个应该是昨天就写完的,不过没时间了,就留到了今天.. 地址:http://codeforces.com/contest/651/problem/A A. Joysticks time limit per test 1 second memory limit per test 256…