D - Travel Card 思路:dp,类似于单调队列优化. 其实可以写的更简单... #include<bits/stdc++.h> #define LL long long #define fi first #define se second #define mk make_pair #define pii pair<int, int> using namespace std; ; ; const int inf = 0x3f3f3f3f; const LL INF = 0…

水dp,加个二分就行,自己看代码. B. Travel Card time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output A new innovative ticketing systems for public transport is introduced in Bytesburg. Now there is a single t…

Travel Card time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output A new innovative ticketing systems for public transport is introduced in Bytesburg. Now there is a single travel card for all tr…

link 题意:乘车,有3种票 1.20块坐1站 2.坐90分钟,50块 3.坐1440分钟,120块 现给出到达每个站的时间,问最优策略 思路: 简单DP,限定条件的3个转移方向,取最小的那个就行了 dp[i]代表到达第i个站的最小花费 /** @Date : 2017-04-10 18:19:53 * @FileName: 760D dp.cpp * @Platform: Windows * @Author : Lweleth (SoundEarlf@gmail.com) * @Link :…

[题目链接]:http://codeforces.com/contest/760/problem/D [题意] 去旅行,有3种类型的乘车票; 第一种:只能旅行一次20元 第二种:按时间计算,90分钟内能无限量旅行,50元 第三种:按时间计算,1440分钟内能无限量旅行,120元 每次旅行只消耗一分钟; 给你n次旅行开始的时间(顺序); 让你求出第1到第i次旅行的这些旅行最少需要花费多少钱f[i]; (每次都重新计算) 输出f[i]-f[i-1]; [题解] 动态规划; 设f[i]表示第1..到第…

Penguin-Avia Time limit: 1.0 secondMemory limit: 64 MB The Penguin-Avia airline, along with other Antarctic airlines, experiences financial difficulties because of the world's economic crisis. People of Antarctica economize on flights and use trains…

A. Petr and a calendar time limit per test:2 seconds memory limit per test:256 megabytes input:standard input output:standard output Petr wants to make a calendar for current month. For this purpose he draws a table in which columns correspond to wee…

Easy-to-Learn English Travel Phrases and Vocabulary! Share Tweet Share Tagged With: Real Life English Do you love to travel?  Me too!  And when you’re traveling you want to know how to pronounce the necessary vocabulary and phrases, right?  I’ve got…

http://forum.chasedream.com/thread-766972-1-1.html 本人2010年 8月F1 二度来美,现在credit score 在724-728之间浮动,最高的时候也就730,属于good range, 大于746的才算excellent score.两年之内从没有信用记录到Good,觉得还算不错,现在把自己如何build credit history和一些心得与大家分享.希望对大家有帮助. 信用记录在北美的重要性自然不必多说.我的启蒙是校内/renren…

Travel The country frog lives in has nn towns which are conveniently numbered by 1,2,…,n. Among n(n−1) / 2 pairs of towns, m of them are connected by bidirectional highway, which needs aa minutes to travel. The other pairs are connected by railway, w…