codeforces 868B Race Against Time
Have you ever tried to explain to the coordinator, why it is eight hours to the contest and not a single problem has been prepared yet? Misha had. And this time he has a really strong excuse: he faced a space-time paradox! Space and time replaced each other.
The entire universe turned into an enormous clock face with three hands — hour, minute, and second. Time froze, and clocks now show the time h hours, m minutes, s seconds.
Last time Misha talked with the coordinator at t1 o'clock, so now he stands on the number t1 on the clock face. The contest should be ready by t2 o'clock. In the terms of paradox it means that Misha has to go to number t2 somehow. Note that he doesn't have to move forward only: in these circumstances time has no direction.
Clock hands are very long, and Misha cannot get round them. He also cannot step over as it leads to the collapse of space-time. That is, if hour clock points 12 and Misha stands at 11 then he cannot move to 1 along the top arc. He has to follow all the way round the clock center (of course, if there are no other hands on his way).
Given the hands' positions, t1, and t2, find if Misha can prepare the contest on time (or should we say on space?). That is, find if he can move from t1 to t2 by the clock face.
题目大意:
给定一个时间,在不经过时分秒针的情况下,从第t1点到t2点
Five integers h, m, s, t1, t2 (1 ≤ h ≤ 12, 0 ≤ m, s ≤ 59, 1 ≤ t1, t2 ≤ 12, t1 ≠ t2).
Misha's position and the target time do not coincide with the position of any hand.
Print "YES" (quotes for clarity), if Misha can prepare the contest on time, and "NO" otherwise.
You can print each character either upper- or lowercase ("YeS" and "yes" are valid when the answer is "YES").
12 30 45 3 11
NO
12 0 1 12 1
YES
3 47 0 4 9
YES
The three examples are shown on the pictures below from left to right. The starting position of Misha is shown with green, the ending position is shown with pink. Note that the positions of the hands on the pictures are not exact, but are close to the exact and the answer is the same.
模拟,但有细节
算出double类型的详细时间,把针所指的都统一成60格一周的单位,即把小时×5
再把查询统一
接下来破环成链,模拟判断就行了
#include<iostream>
#include<cstdio>
#include<algorithm>
#include<cstring>
using namespace std;
double h,m,s,t1,t2,h2,m2,s2;
int flag1,flag2;
int main()
{
cin>>h>>m>>s>>t1>>t2;
t1*=5.0;t2*=5.0;
m=m+s/;
if (m>=60.0) m-=60.0;
h=h*+m/;
if (h>=60.0) h-=60.0;
s2=60.0+s;
m2=60.0+m;
h2=60.0+h;
if (t1>t2) swap(t1,t2);
flag1=;
if ((t1<s&&s<t2)||(t1<s2&&s2<t2)||(t1<m&&m<t2)||(t1<m2&&m2<t2)||(t1<h&&h<t2)||(t1<h2&&h2<t2))
{
flag1=;
}
t1+=;
if (t1>t2) swap(t1,t2);
flag2=;
if ((t1<s&&s<t2)||(t1<s2&&s2<t2)||(t1<m&&m<t2)||(t1<m2&&m2<t2)||(t1<h&&h<t2)||(t1<h2&&h2<t2))
{
flag2=;
}
if (flag1||flag2) cout<<"YES\n";
else cout<<"NO\n";
}
codeforces 868B Race Against Time的更多相关文章
- codeforces 868B
B. Race Against Time time limit per test 2 seconds memory limit per test 256 megabytes input standar ...
- codeforces 868B The Eternal Immortality【暴力+trick】
B. The Eternal Immortality time limit per test 1 second memory limit per test 256 megabytes input st ...
- Codeforces Round #131 (Div. 2) E. Relay Race dp
题目链接: http://codeforces.com/problemset/problem/214/E Relay Race time limit per test4 secondsmemory l ...
- Codeforces Round #328 (Div. 2) C. The Big Race 数学.lcm
C. The Big Race Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/592/probl ...
- Codeforces Round #346 (Div. 2) D Bicycle Race
D. Bicycle Race 题目链接http://codeforces.com/contest/659/problem/D Description Maria participates in a ...
- Codeforces Round #346 (Div. 2) D. Bicycle Race 叉积
D. Bicycle Race 题目连接: http://www.codeforces.com/contest/659/problem/D Description Maria participates ...
- CodeForces 659D Bicycle Race (判断点是否为危险点)
D - Bicycle Race Time Limit:1000MS Memory Limit:262144KB 64bit IO Format:%I64d & %I64u S ...
- codeforces 659D D. Bicycle Race(水题)
题目链接: D. Bicycle Race time limit per test 1 second memory limit per test 256 megabytes input standar ...
- Codeforces 659D Bicycle Race【计算几何】
题目链接: http://codeforces.com/contest/659/problem/D 题意: 若干条直线围城的湖,给定直线的端点,判断多少个转点会有危险?(危险是指直走的的话会掉进水里) ...
随机推荐
- 如何在http请求中使用线程池(干货)
这段时间对网络爬虫比较感兴趣,实现起来实际上比较简单.无非就是http的web请求,然后对返回的html内容进行内容筛选.本文的重点不在于这里,而在于多线程做http请求.例如我要实现如下场景:我有N ...
- C语言---字符数组
一.PTA实验作业 题目1:7-2 统计一行文本的单词个数 1. 本题PTA提交列表 2. 设计思路 定义循环变量i,j定义不为空格的字符数count,定义单词数number,i,j,count,nu ...
- Beta冲刺 第一天
Beta冲刺 第一天 1. 昨天的困难 由于今天还是第一天,所以暂时没有昨天的困难. 2. 今天解决的进度 潘伟靖: 对代码进行了review 1.将某些硬编码改为软编码 2.合并了一些方法,简化代码 ...
- Linux学习--进程创建
进程创建 在Linux系统下,自己可以创建进程: 当进程执行时,它会被装载进虚拟内存,为程序变量分配空间,并把相关信息添到 task_struct里. 进程内存布局分为四个不同的段: • 文本段,包含 ...
- Python脚本自动提取和替换代码中的中文
# -*- coding: utf-8 -*- import os import os.path import re import sys reload(sys) sys.setdefaultenco ...
- JavaScript-Jquery实现全选反选
html: <dl> <dt><input type="checkbox" id="checkAll" /><labe ...
- 源码解析flask的路由系统
源码解析flask的路由系统 当我们新建一个flask项目时,pycharm通常已经为项目定义了一个基本路由 @app.route('/') def hello_world(): return 'He ...
- 新概念英语(1-101)A Card From Jimmy
Lesson 101 A card from Jimmy 吉米的明信片 Listen to the tape then answer this question. Does Grandmother s ...
- restful架构风格设计准则(一)以资源为中心、自描述的请求响应、资源状态迁移为粒度
读书笔记,原文链接:http://www.cnblogs.com/loveis715/p/4669091.html,感谢作者! 一.需求描述 当用户在某个电子商务网站购物时,他首先查看要购买的商品分类 ...
- bootstrap表格 之多选数据的获取
使用表格的时候经常会用到多选的功能,比较常用,下面写一个小Dome记录一下 如下:单击批量删除按钮之后,需要获取选中行数据,传值到后台进行处理 一.获取选择行的数据 btnplDel是按钮id:tab ...