A. Cheap Travel time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Ann has recently started commuting by subway. We know that a one ride subway ticket costs a rubles. Besides, Ann found out th…

题目链接:http://codeforces.com/problemset/problem/466/A 题目意思:一个 ride 需要 a 卢布,m 个 ride 需要 b 卢布,这两种方案都可以无限制地采用,要完成 n rides 最少需要多少卢布. 只要理清思路,一步一步做就不难了. 首先 要知道 n 和 m 的大小关系是不确定的,有可能出现 n < m 情况.此时面临的选择是:一张 b 卢布 还是 n * a 卢布. 如果 n >= m 要分情况讨论. 由于我们希望用的卢布越少越好,那么…

http://codeforces.com/contest/466 噗,b没写出来啊.a写完后过了40分钟了啊,罚时4次啊!果然太弱 总结: a题看错题,没有考虑m>=n其实也是可行的,导致调了40min...b题不会......(暴力是硬伤..),c题一开始交了tle......然后改了下才过..rp好. 很多情况下2种决策取最优我们可以枚举其中一种决策的数目然后计算另一种决策的数目..简称打暴力打到家 a.Cheap Travel 题意:要过n个站,每次可以选择过1个站花费a卢布,也可以选择…

每个标题都做了题目原网址的超链接 Day11<Given Length and Sum of Digits...> 题意: 给定一个数 m 和 一个长度 s,计算最大和最小在 s 长度下,各位数字之和为 m 的值 如果无法生成,则输出两个-1 题解: 需要注意:在输出最大值时,判一下 k 是否为 0 上板子: #include <bits/stdc++.h> using namespace std; typedef long long ll; int main() { int le…

Is certainly his dresser seem or dress creation process into video clip. Bus dropped???? Especially bus travel credit card, just within August was grabbed from the demo, if simply no certificate could end up being big difficulty???? 96-way driver's v…

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…

1576: [Usaco2009 Jan]安全路经Travel Time Limit: 10 Sec  Memory Limit: 64 MBSubmit: 1044  Solved: 363[Submit][Status][Discuss] Description Input * 第一行: 两个空格分开的数, N和M * 第2..M+1行: 三个空格分开的数a_i, b_i,和t_i Output * 第1..N-1行: 第i行包含一个数:从牛棚_1到牛棚_i+1并且避免从牛棚1到牛棚i+1最…

目录 . Linux inode简介 . Fast Directory Travel Method 1. Linux inode简介 0x1: 磁盘分割原理 字节 -> 扇区(sector)(每个扇区存储512字节) -> 块(block)(最常见的是4KB,即8个连续的sector组成一个block) . 磁盘的最小存储单位是"扇区" . 文件存储的最小单位是"块" 0x2: Linux EX2 filesystem 当一个partition(分区)被…

Problem Description Jack likes to travel around the world, but he doesn’t like to wait. Now, he is traveling in the Undirected Kingdom. There are n cities and m bidirectional roads connecting the cities. Jack hates waiting too long on the bus, but he…

I. Travel Time Limit: 3000ms Memory Limit: 65536KB The country frog lives in has n 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 a minutes to travel. The…