洛谷 CF1193A Amusement Park 洛谷传送门 题目翻译 有一个游乐场有一个好玩的项目:一些有向滑梯可以将游客从一个景点快速.刺激地传送到另一个景点.现在,你要帮游乐场老板来规划一个造滑梯的项目. 滑梯只能从海拔高的地方向海拔低的地方滑.老板原定的方案已经给出,你的工作是反转某些滑梯的方向(可以反转全部的或一个都不转),并为每个景点指定一个海拔高度,使得每一个滑梯都能下山,那么这个方案是合法的.其成本是要反转的滑梯的总数.对于老板给定的方案,你需要算出所有合法方案的成本总和.由于…

On a sunny Sunday, a group of children headed by their teacher came to an amusement park. Aunt Frosya, who was a very kind and quiet person, worked at the ticket window on that day. The teacher gave her the money but didn't say how many tickets she w…

1796. Amusement Park Time limit: 1.0 second Memory limit: 64 MB On a sunny Sunday, a group of children headed by their teacher came to an amusement park. Aunt Frosya,who was a very kind and quiet person, worked at the ticket window on that day. The t…

人生第一次AC黑题,我太感动了. 每日一题 day31 打卡 Analysis 先跑遍DJ,求出1到 i的最短路.得到每个点到 1号点的距离后,从小到大排序一遍,这时便可以枚举每个点到 1号点的距离修筑地下隧道,每次将每个被枚举到的点加入一个集合(实际上可以由边权总和-与该点相连所有没有计入集合的边权总和). #include<iostream> #include<cstdio> #include<cstring> #include<algorithm> #…

[codeforces 241]C. Mirror Box 试题描述 Mirror Box is a name of a popular game in the Iranian National Amusement Park (INAP). There is a wooden box, 105 cm long and 100cm high in this game. Some parts of the box's ceiling and floor are covered by mirrors.…

Problem UVA1599-Ideal Path Time Limit: 3000 mSec Problem Description New labyrinth attraction is open in New Lostland amusement park. The labyrinth consists of n rooms connected by m passages. Each passage is colored into some color ci. Visitors of t…

time limit per test4 seconds memory limit per test512 megabytes inputstandard input outputstandard output Fox Ciel is in the Amusement Park. And now she is in a queue in front of the Ferris wheel. There are n people (or foxes more precisely) in the q…

time limit per test5 seconds memory limit per test256 megabytes inputstandard input outputstandard output Berland amusement park shooting gallery is rightly acknowledged as one of the best in the world. Every day the country's best shooters master th…

LsF is visiting a local amusement park with his friends, and a mirror room successfully attracts his attention. Inside the mirror room, there are n plane mirrors standing vertically on the ground. They are placed end-to-end and face-to-face so that i…

鉴于某些原因(主要是懒)就不一题一题写了,代码直接去\(OJ\)上看吧 CodeChef Making Change 传送门 完全没看懂题解在讲什么(一定是因为题解公式打崩的原因才不是曲明英语太差呢--) 由于\(C=\sum x_i\times a_i\),我们可以把\(x_i\)给二进制分解,然后依次考虑每一位 设\(f_{i,j}\)表示考虑到\(C\)的二进制第\(i\)位,且\(0\)到\(i-1\)位都已经对上,进位为\(j\)的方案数,那么考虑所有\(x_i\)当前这一位,每一个\…