poj-1005-l tanink i need a houseboat
Description
After doing more research, Fred has learned that the land that is being lost forms a semicircle. This semicircle is part of a circle centered at (0,0), with the line that bisects the circle being the X axis. Locations below the X axis are in the water. The semicircle has an area of 0 at the beginning of year 1. (Semicircle illustrated in the Figure.)
Input
Output
Sample Input
2
1.0 1.0
25.0 0.0
Sample Output
Property 1: This property will begin eroding in year 1.
Property 2: This property will begin eroding in year 20.
END OF OUTPUT.
Hint
2.This problem will be judged automatically. Your answer must match exactly, including the capitalization, punctuation, and white-space. This includes the periods at the ends of the lines.
3.All locations are given in miles.
输出:输出该坐标会在哪一年年底开始被河水侵蚀。对应每个坐标输出一行,输出结束后输出 “END OF OUTPUT.”
#include<iostream>
using namespace std;
const double pi=3.1415926;
int main()
{
int n;
cin>>n; for(int i=1;i<=n;i++)
{
double len,wid;
double m;
int mm=0;
cin>>len>>wid;
m=pi*(len*len+wid*wid)/2;。//求出整个岛消失的面积
mm=m/50+1; cout<<"Property "<<i<<": This property will begin eroding in year "<<mm<<"."<<endl;
if(i==n)cout<<"END OF OUTPUT."; } return 0;
}
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