PKU 1005

比较简单吧，其实算是数学问题了

// 1005.cpp : 定义控制台应用程序的入口点。
//

#include "stdafx.h"
#include "stdio.h"
#include "iostream"
using namespace std;
#define  pi 3.1415926
int main(int argc, char* argv[])
{
    int n=;
    cin>>n;
    int year=;
    int i=;
    int *res =new int[n];
    while (i<n)
    {
        float a=,b=;
        cin>>a>>b;
        double square=pi*(a*a+b*b)/;
        double dt=square/;
        year=dt;
        if(square>year*)  //不加也可以AC
            res[i]=year+;
        else
            res[i]=year;
        i++;
    }
    for (int j=;j<n;j++)
    {
        printf("Property %d: This property will begin eroding in year %d.\n",j+,res[j]);
    }
    printf("END OF OUTPUT.");//忘记加这个结果WA半天，也怪自己
    return ;
}