题目如下: One important factor to identify acute stroke (急性脑卒中) is the volume of the stroke core. Given the results of image analysis in which the core regions are identified in each MRI slice, your job is to calculate the volume of the stroke core. Inpu…

1091. Acute Stroke (30) 时间限制 400 ms 内存限制 65536 kB 代码长度限制 16000 B 判题程序 Standard 作者 CHEN, Yue One important factor to identify acute stroke (急性脑卒中) is the volume of the stroke core. Given the results of image analysis in which the core regions are iden…

D - Acute Triangles 思路: 极角排序+点积叉积 在一个三角形中,如果它是直角或者顿角三角形,那么直角和顿角只会出现一次 所以直角和顿角三角形的个数等于直角和顿角的个数 所以锐角三角形的个数等于三元组个数减去直角和顿角的个数 三点共线看成退化的顿角三角形 怎么算直角和顿角个数呢, 先按某个点极角排序,然后暴力过取,用双指针维护到 当前幅角距离为pi/2 到 3*pi/2 的区间, 区间内点的个数就是到当前幅角为直角或顿角的个数 可以用点积和叉积分别判断角度和相对方向 代码: #…

One important factor to identify acute stroke (急性脑卒中) is the volume of the stroke core. Given the results of image analysis in which the core regions are identified in each MRI slice, your job is to calculate the volume of the stroke core. Input Spec…

1091 Acute Stroke(30 分) One important factor to identify acute stroke (急性脑卒中) is the volume of the stroke core. Given the results of image analysis in which the core regions are identified in each MRI slice, your job is to calculate the volume of the…

1091 Acute Stroke (30 分) One important factor to identify acute stroke (急性脑卒中) is the volume of the stroke core. Given the results of image analysis in which the core regions are identified in each MRI slice, your job is to calculate the volume of th…

1091. Acute Stroke (30) 时间限制 400 ms 内存限制 65536 kB 代码长度限制 16000 B 判题程序 Standard 作者 CHEN, Yue One important factor to identify acute stroke (急性脑卒中) is the volume of the stroke core. Given the results of image analysis in which the core regions are iden…

One important factor to identify acute stroke (急性脑卒中) is the volume of the stroke core. Given the results of image analysis in which the core regions are identified in each MRI slice, your job is to calculate the volume of the stroke core. Input Spec…

One important factor to identify acute stroke (急性脑卒中) is the volume of the stroke core. Given the results of image analysis in which the core regions are identified in each MRI slice, your job is to calculate the volume of the stroke core. Input Spec…

Source: PAT A1091 Acute Stroke (30 分) Description: One important factor to identify acute stroke (急性脑卒中) is the volume of the stroke core. Given the results of image analysis in which the core regions are identified in each MRI slice, your job is to…