CIRU - The area of the union of circles no tags You are given N circles and expected to calculate the area of the union of the circles ! Input The first line is one integer n indicates the number of the circles. (1 <= n <= 1000) Then follows n line…
You are given N circles and expected to calculate the area of the union of the circles ! Input The first line is one integer n indicates the number of the circles. (1 <= n <= 1000) Then follows n lines every line has three integers Xi Yi Ri indicate…
[题解]CIRU - The area of the union of circles [SP8073] \ 圆的面积并 [Bzoj2178] 传送门: \(\text{CIRU - The area of the union of circles [SP8073]}\) 圆的面积并 \(\text{[Bzoj2178]}\) [题目描述] 给出 \(n\) 个圆的圆心坐标 \((x,y)\) 和半径 \(r\),求它们覆盖的总面积. [输入] 第一行一个整数 \(n\),表示一共有 \(n\)…
Description You are given N circles and expected to calculate the area of the union of the circles ! Input The first line is one integer n indicates the number of the circles. (1 <= n <= 1000) Then follows n lines every line has three integers Xi Yi…
[SPOJ-CIRU]The area of the union of circles/[BZOJ2178]圆的面积并 题目大意: 求\(n(n\le1000)\)个圆的面积并. 思路: 对于一个\(x\),我们可以用线段覆盖的方法求出被圆覆盖的长度.用\(f(x)\)表示横坐标为\(x\)时覆盖的长度,则我们可以对\(f(x)\)积分来得到答案.注意面积不连续的部分要分开求. 源代码: #include<cmath> #include<cstdio> #include<cc…