POJ_1005_I Think I Need a Houseboat

#include<stdio.h>
#define PI 3.1415926

int main(){
	int n, j;
	double x, y;
	scanf("%d", &n);
	for (int i = 1; i <= n; i++){
		scanf("%lf%lf", &x, &y);
		j = (x*x + y*y)*PI / 100;//(x,y)所在半圆面积/每年侵蚀面积
		j++;
		printf("Property %d: This property will begin eroding in year %d.\n", i, j);
	}
	printf("END OF OUTPUT.\n");
	return 0;
}