acm_1005.cpp

北大ACM1005(I Think I Need a Houseboat)

#include <iostream>
#include <cmath>
using namespace std;

int main()
{
	float x[100],y[100];
	int n,i,year[100]={0};
	cin>>n;
	for(i=1;i<=n;i++)
	{
		cin>>x[i]>>y[i];
		double s=sqrt(50*year[i]*2/3.14),t=sqrt(x[i]*x[i]+y[i]*y[i]);
		while(t>s)
		{
			year[i]++;
			s=sqrt(50*year[i]*2/3.14);
		}
	}
	for(i=1;i<=n;i++)
		cout<<"Property "<<i<<": This property will begin eroding in year "<<year[i]<<"."<<endl;
	cout<<"END OF OUTPUT.";
	return 0;
}