POJ 1005 I Think I Need a Houseboat C++版

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题目链接：http://poj.org/problem?id=1005

水题，文字还一大串，题意就是那个半圆每年增加50平米，问多少年到(x，y)这个点

代码如下：

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/*Problem: 1005		User: awq123
**Memory: 252K		Time: 0MS
**Language: C++		Result: Accepted
*/
#include <iostream>
#include <cstdio>
#include <cstring>
using namespace std;
int main()
{
	float x,y;
	int t,n,i;
	cin>>n;
	for(i=1;i<=n;i++)
	{
		cin>>x>>y;
		t=3.1415926*(x*x+y*y)/2;
		cout<<"Property "<<i<<": This property will begin eroding in year "<<t/50+1<<"."<<endl;
	}
	cout<<"END OF OUTPUT."<<endl;
}