hdu 1071 The area
2013-05-10 09:10
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题目比较简单,但是很有纪念意义,算是第一个遇到的积分题目,同时也发现原来计算机也不是万能的啊,需要预先准备一些工作才能交个计算机来完成。
题目传送门
题目传送门
#include<stdio.h> int main() { double x1,y1,x2,y2,x3,y3; double area,a; int n; scanf("%d",&n); while(n--) { scanf("%lf%lf%lf%lf%lf%lf",&x1,&y1,&x2,&y2,&x3,&y3); a = (y2-y1)/(x2-x1)/(x2-x1); area = a/3*((x3-x1)*(x3-x1)*(x3-x1) - (x2-x1)*(x2-x1)*(x2-x1)) + y1*(x3-x2); area -= (y3+y2)*(x3-x2)/2; //梯形面积 printf("%.2lf\n",area); } return 0; }
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