pi=acos(-1.0) https://www.luogu.org/problemnew/show/T4529 #include <cstdio> #include <cstdlib> #include <cmath> #include <cstring> #include <time.h> #include <string> #include <set> #include <map> #include &…

1.PI的求法的数学依据 如图,可以看见在边长为1的正方形里面,有一个1/4圆,我们随机在正方形中取点,点在圆内的概率和点在正方形内的概率之比正好为两者的面积之比.这样就有在圆内的点的数目比所有点的数目值应该为0.25*π*1/1=0.25π.只要我们随机取点的数目足够多,根据上述关系求得的π的精确率就越高.我们最终可以得到π=4*在圆内的点的数目/所有点的数目,据此,可以写出如下程序: from numpy.random import rand def sample(n): return (r…

Pie Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 14536   Accepted: 4979   Special Judge Description My birthday is coming up and traditionally I'm serving pie. Not just one pie, no, I have a number N of them, of various tastes and of…

链接:https://www.nowcoder.com/acm/contest/118/A 来源:牛客网 PUBG 时间限制:C/C++ 1秒,其他语言2秒 空间限制:C/C++ 32768K,其他语言65536K 64bit IO Format: %lld 题目描述 最近,喜爱ACM的PBY同学沉迷吃鸡,无法自拔,于是又来到了熟悉的ERANGEL.经过一番搜寻,PBY同学准备动身前往安全区,但是,地图中埋伏了许多LYB,PBY的枪法很差,希望你能够帮他找到一条路线,每次只能向上.下.左.右移动…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=1969 Pie Time Limit: 5000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 4513    Accepted Submission(s): 1819 Problem Description My birthday is coming up and trad…

NC16746 神奇盘子 题目 题目描述 有一个神奇的盘子,形状为圆形.盘子上面爬着一个大象(视作一个点).由于现实的扭曲,当大象在盘子某个直径的一端的时候,可以瞬间传送至直径的另一端.现在大象想去盘子上另外一点,问他最少需要移动多少距离.传送不计距离. 输入描述 第一行一个整数r(1 <= r <= 1000)代表盘子的半径. 接下来两行两个整点分别代表大象所在的位置和大象目标的位置坐标.保证两个点都在圆内(可能在边界上),圆心在点(0, 0)上. 输出描述 输出一个实数,代表大象最短需要移…

B2. Shave Beaver!   The Smart Beaver has recently designed and built an innovative nanotechnologic all-purpose beaver mass shaving machine, "Beavershave 5000". Beavershave 5000 can shave beavers by families! How does it work? Very easily! There…

Ombrophobic Bovines Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 16539 Accepted: 3605 Description FJ's cows really hate getting wet so much that the mere thought of getting caught in the rain makes them shake in their hooves. They have…

A Plug for UNIX Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 14786 Accepted: 4994 Description You are in charge of setting up the press room for the inaugural meeting of the United Nations Internet eXecutive (UNIX), which has an interna…

Optimal Milking Time Limit: 2000MS Memory Limit: 30000K Total Submissions: 13968 Accepted: 5044 Case Time Limit: 1000MS Description FJ has moved his K (1 <= K <= 30) milking machines out into the cow pastures among the C (1 <= C <= 200) cows.…