2016 Multi-University Training Contest 3 1010 Teacher Bo(数学)
来源:互联网 发布:股票盈亏软件 编辑:程序博客网 时间:2024/05/22 07:57
题目链接:HDU5671
简单题意
有一条X轴正向的河流,水流速度为V2
现在你在(0,a)这个点,要到原点去,速度为V1,速度方向保持始终指向原点,问所花的时间。
思路
把问题转化一下,认为是原点以V2的速度左移,你要去追原点,
这样可分别对x和y方向列方程
积分得
然后做三角代换得
当
当
代码
#include <bits/stdc++.h>using namespace std;int main(){ double a,v1,v2; while(~scanf("%lf %lf %lf",&a, &v1, &v2)){ if(a == 0) {puts("0");continue;} if(v1 <= v2){puts("Infinity");continue;} printf("%.10f\n",a*v1/(v1*v1-v2*v2)); }}
0 0
- 2016 Multi-University Training Contest 3 1010 Teacher Bo(数学)
- 2016 Multi-University Training Contest 3-1011.Teacher Bo,暴力!
- 2016 Multi-University Training Contest 3 1011 Teacher Bo
- 2016 Multi-University Training Contest 3 1011 Teacher Bo
- 2016 Multi-University Training Contest 3 1011 Teacher Bo(模拟)
- 2016 Multi-University Training Contest 3 hdu 5762 Teacher Bo【计算几何】
- 2016 Multi-University Training Contest 3 1010 Rower Bo
- 2016 Multi-University Training Contest 3 Rower Bo
- 2016 Multi-University Training Contest 3 Sqrt Bo
- 2016 Multi-University Training Contest 3 1001 Sqrt Bo
- 2016 Multi-University Training Contest 3 1002 Permutation Bo
- 2016 Multi-University Training Contest 3 1001 Sqrt Bo
- 2016 Multi-University Training Contest 3 1003 Life Winner Bo
- 2016 Multi-University Training Contest 3 Rower Bo
- 2016 Multi-University Training Contest 3 1001 Sqrt Bo (模拟)
- hdu 5752 Sqrt Bo(2016 Multi-University Training Contest 3——水题)
- HDU 5754 Life Winner Bo(找规律 + 威佐夫博弈)--2016 Multi-University Training Contest 3
- hdu 5753 Permutation Bo(2016 Multi-University Training Contest 3——组合)
- 根据经纬度获取当前地址
- git 解决主库冲突conflict
- 接口
- 【语言-C++】 Clipboard(剪贴板)2-监听剪贴板并直接显示剪贴板内容到窗口
- 在cmd下运行monkeyrunner时报错Script terminated due to an exception
- 2016 Multi-University Training Contest 3 1010 Teacher Bo(数学)
- html5语义化标签
- caffe学习(一):CIFAR-10
- IT-linux-linux故障排错
- Manacher 算法模板
- iOS 方法调用异常处理流程
- Docker系列之(四):Win10上运行Docker
- Linux下C语言编程的问题
- BBC news reading 3--前缀 patr