POJ1005-I Think I Need a Houseboat

http://poj.org/problem?id=1005

可能第一遍读下来题意不懂，看下面代码应该能懂了吧- -#注意向上取整就好了。

#include<stdio.h>
#include<math.h>
#define PI 3.1415926
int main(void)
{
    int N,i,year;
    double x,y,calc;
    scanf("%d",&N);
    for(i=1;i<=N;i++)
    {
        scanf("%lf%lf",&x,&y);
        calc=(x*x+y*y)*PI/2/50;
        year=ceil(calc);
        printf("Property %d: This property will begin eroding in year %d.\n",i,year);
    }
    printf("END OF OUTPUT.\n");
    return 0;
}