UVA 10668 - Expanding Rods 题目链接 题意:给定一个铁棒,如图中加热会变成一段圆弧,长度为L′=(1+nc)l,问这时和原来位置的高度之差 思路:画一下图能够非常easy推出公式,设圆弧扇形部弧度r,那么能够计算出铁棒长度为lr/sin(r)这个公式在[0, pi/2]是单调递增的,所以能够用二分法去求解 要注意的一点是最后答案计算过程中带入mid,之前是带入x(二分的左边值),可实际上x是可能等于0的,而带入mid,因为是double型,所以mid实际上表示是一个很趋…

Problem A: Expanding Rods When a thin rod of length L is heated n degrees, it expands to a new length L'=(1+n*C)*L, where C is the coefficient of heat expansion. When a thin rod is mounted on two solid walls and then heated, it expands and takes the…

                       Expanding Rods Time Limit: 1000MS   Memory Limit: 30000K Total Submissions: 10187   Accepted: 2593 Description When a thin rod of length L is heated n degrees, it expands to a new length L'=(1+n*C)*L, where C is the coefficient…

Expanding Rods Time Limit: 1000MS   Memory Limit: 30000K Total Submissions: 13688   Accepted: 3527 Description When a thin rod of length L is heated n degrees, it expands to a new length L'=(1+n*C)*L, where C is the coefficient of heat expansion. Whe…

                                                                                                          Expanding Rods Time Limit: 1000MS   Memory Limit: 30000K Total Submissions: 13516   Accepted: 3484 Description When a thin rod of length L is he…

Expanding Rods Time Limit: 1000MS   Memory Limit: 30000K Total Submissions: 13780   Accepted: 3563 Description When a thin rod of length L is heated n degrees, it expands to a new length L'=(1+n*C)*L, where C is the coefficient of heat expansion.  Wh…

D - Expanding Rods POJ - 1905 When a thin rod of length L is heated n degrees, it expands to a new length L'=(1+n*C)*L, where C is the coefficient of heat expansion. When a thin rod is mounted on two solid walls and then heated, it expands and takes…

Expanding Rods Time Limit: 1000MS Memory Limit: 30000K Total Submissions: 20224 Accepted: 5412 Description When a thin rod of length L is heated n degrees, it expands to a new length L'=(1+n*C)*L, where C is the coefficient of heat expansion. When a…

1137 - Expanding Rods    PDF (English) Statistics Forum Time Limit: 0.5 second(s) Memory Limit: 32 MB When a thin rod of length L is heated n degrees, it expands to a new length L' = (1+n*C)*L, where C is the coefficient of heat expansion. When a thi…

题目链接:http://lightoj.com/volume_showproblem.php?problem=1137 题意:有一根绳子的长度为l,在有温度的情况下会变形为一个圆弧,长度为 l1 = (n*c+1)*l;求图中的h;并说明增加的长度不超过原长度的一半: 我们可以二分h,然后根据h求弧长,比较一下和l1的长度即可: 把弧长公式记错我也是醉了:   #include <stdio.h> #include <algorithm> #include <cstring&…