#include<iostream>
#include<cmath>

#define pai 3.141593
using namespace std;
int main()
{
	int n;
	cin>>n;
	int i;
	int num=0;
	for(i=1;i<=n;i++)
	{
		num++;
		float x,y;
		int z;
		cin>>x>>y;
		if(x!=0.0&&y>=0.0)
		{
			
		    float dis=x*x+y*y;
		    float rr;
		    for(z=1;;z++)
			{
	    	   rr=100*z/pai;
			   if(rr>dis) 
			    	break;
			}
		    cout<<"Property "<<num<<": This property will begin eroding in year "<<z<<'.'<<endl;
		}
	}
	cout<<"END OF OUTPUT."<<endl;
	return 0;
}

• 保证不PE最好的方法是复制题目的输出，然后把数字换成符号就ok了... (594) lxp_rs 2006-07-21 14:14:09