luogu2394 yyy loves Chemistry I

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luogu2394 yyy loves Chemistry I

练习 #include <iostream> #include <cstdio> using namespace std; long double a; int main(){ scanf("%15Lf", &a); printf("%.8Lf\n", a/23); return 0; }…

[洛谷P2394]yyy loves Chemistry I

题目大意:给你一个实数x($0<x\leq 1$),要你求x/23的值(保留8位小数). 解题思路:此题用double读的精度是不够的,用long double直接读入也会WA,正确做法是“scanf("%18Lf",&x);”,按此方法即可保证精度. 时间复杂度$O(1)$ ~\(≧▽≦)/~ C++ Code: #include<cstdio> int main(){ long double d; scanf("%18Lf",&…

[洛谷1580]yyy loves Easter_Egg I

题目背景 Soha的出题效率着实让人大吃一惊.OI,数学,化学的题目都出好了,物理的题还没有一道.于是,Huntfire,absi2011,lanlan对soha进行轮番炸,准备炸到soha出来,不料,人群中冲出了个kkksc03…… 题目描述 yyy loves OI(Huntfire),yyy loves Maths(lanlan),yyy loves Chemistry(absi2011)对yyy loves Physics(soha)进行轮番炸,轰炸按照顺序进行,顺序为Huntfire,…

yyy loves Easter_Egg I（恶心的字符串模拟）

题目背景 Soha的出题效率着实让人大吃一惊.OI,数学,化学的题目都出好了,物理的题还没有一道.于是,Huntfire,absi2011,redbag对soha进行轮番炸,准备炸到soha出来,不料,人群中冲出了个kkksc03…… 题目描述 yyy loves OI(Huntfire),yyy loves Maths(redbag),yyy loves Chemistry(absi2011)对yyy loves Physics(soha)进行轮番炸,轰炸按照顺序进行,顺序为Huntfire,…

CF 445B DZY Loves Chemistry（并查集）

题目链接: 传送门 DZY Loves Chemistry time limit per test:1 second memory limit per test:256 megabytes Description DZY loves chemistry, and he enjoys mixing chemicals. DZY has n chemicals, and m pairs of them will react. He wants to pour these chemicals…

DZY Loves Chemistry 分类： CF 比赛图论 2015-08-08 15:51 3人阅读评论(0) 收藏

DZY Loves Chemistry time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output DZY loves chemistry, and he enjoys mixing chemicals. DZY has n chemicals, and m pairs of them will react. He wants to pou…