链接:http://cerberus.delos.com:791/usacoprob2?S=snail&a=uzElkgTaI9d 描述:有障碍的棋盘上的搜索,求从左上角出发最多经过多少个格子. 思路:暴搜 我的实现: 1 /* 2 ID:zhangyi20 3 PROG:snail 4 LANG:C++ 5 */ 6 #include <iostream> 7 #include <cstdio> 8 #include <cmath> 9 using names…

Snail TrailsAll Ireland Contest Sally Snail likes to stroll on a N x N square grid (1 <n <= 120). She always starts in the upper left corner of the grid. The grid has empty squares (denoted below by `.') and a number (B) of barriers (denoted below b…

P1560 [USACO5.2]蜗牛的旅行Snail Trails 题目描述 萨丽·斯内尔(Sally Snail,蜗牛)喜欢在N x N 的棋盘上闲逛(1 < n <= 120). 她总是从棋盘的左上角出发.棋盘上有空的格子(用“.”来表示)和B 个路障(用“#”来表示). 下面是这种表示法的示例棋盘: 萨丽总是垂直(向上或者向下)或水平(向左或者向右)地走.她可以从出发地(总是记作A1 )向下或者向右走.一旦萨丽选定了一个方向,她就会一直走下去.如果她遇到棋盘边缘或者路障,她就停下来,并且…

P1560 [USACO5.2]蜗牛的旅行Snail Trails 题目描述 萨丽·斯内尔(Sally Snail,蜗牛)喜欢在N x N 的棋盘上闲逛(1 < n <= 120). 她总是从棋盘的左上角出发.棋盘上有空的格子(用“.”来表示)和B 个路障(用“#”来表示). 下面是这种表示法的示例棋盘: 萨丽总是垂直(向上或者向下)或水平(向左或者向右)地走.她可以从出发地(总是记作A1 )向下或者向右走.一旦萨丽选定了一个方向,她就会一直走下去.如果她遇到棋盘边缘或者路障,她就停下来,并且…

Ski Course Design Farmer John has N hills on his farm (1 <= N <= 1,000), each with an integer elevation in the range 0 .. 100. In the winter, since there is abundant snow on these hills, FJ routinely operates a ski training camp. Unfortunately, FJ h…

Wormholes Farmer John's hobby of conducting high-energy physics experiments on weekends has backfired, causing N wormholes (2 <= N <= 12, N even) to materialize on his farm, each located at a distinct point on the 2D map of his farm (the x,y coordin…

题目链接 题解 一看题没什么思路.写了个暴力居然可过?! Code #include<bits/stdc++.h> #define LL long long #define RG register using namespace std; inline int gi() { bool f = 0; char c = getchar(); RG int x = 0; while (c!='-' && (c < '0' || c > '9')) c = getchar(…

题目描述 萨丽·斯内尔(Sally Snail,蜗牛)喜欢在N x N 的棋盘上闲逛(1 < n <= 120). 她总是从棋盘的左上角出发.棋盘上有空的格子(用“.”来表示)和B 个路障(用“#”来表示). 下面是这种表示法的示例棋盘: 萨丽总是垂直(向上或者向下)或水平(向左或者向右)地走.她可以从出发地(总是记作A1 )向下或者向右走.一旦萨丽选定了一个方向,她就会一直走下去.如果她遇到棋盘边缘或者路障,她就停下来,并且转过90 度.她不可能离开棋盘,或者走进路障当中.并且,萨丽从不跨过…

[USACO Mar08] 奶牛跑步 Description Bessie准备用从牛棚跑到池塘的方法来锻炼. 但是因为她懒,她只准备沿着下坡的路跑到池塘,然后走回牛棚. Bessie也不想跑得太远,所以她想走最短的路经. 农场上一共有M(1<=M<=10,000)条路,每条路连接两个用1..N(1<=N<=1000)标号的地点. 更方便的是,如果X>Y,则地点X的高度大于地点Y的高度. 地点N是Bessie的牛棚;地点1是池塘. 很快, Bessie厌倦了一直走同一条路.所以…

嘟嘟嘟 一道很水的爆搜题,然后我调了近40分钟…… 错误:输入数据最好用cin,因为数字可能不止一位,所以用scanf后,单纯的c[0]为字母,c[1]数字………………………… #include<cstdio> #include<iostream> #include<cmath> #include<algorithm> #include<cstring> #include<cstdlib> #include<cctype>…