F.A.Qs
Home
ProblemSet
Status
Ranklist
Contest
Login
Register
捐赠本站
Notice:
开心刷题:)
Problem 1132. -- [POI2008]Tro -- 衡阳八中OJ离线版-2014-11-04
1132: [POI2008]Tro
Time Limit:
20 Sec
Memory Limit:
162 MB
Submit:
912
Solved:
243
[
Submit
][
Status
]
Description
平面上有N个点. 求出所有以这N个点为顶点的三角形的面积和 N<=3000
Input
第一行给出数字N,N在[3,3000] 下面N行给出N个点的坐标,其值在[0,10000]
Output
保留一位小数,误差不超过0.1
Sample Input
5
0 0
1 2
0 2
1 0
1 1
Sample Output
7.0
HINT
Source
[
Submit
][
Status
]
HOME
Back