#include<stdio.h>
#include<math.h>
int num;
float x,y;
int i,year;
double calc;
int main()
{
scanf("%d",&num);
for(i=1;i<=num;i++)
{
scanf("%f %f ",&x,&y);
calc=(x*x+y*y)*3.14/2/50;
year=ceil(calc); //向上取整函数
printf("Property %d :This property will begin eroding in year %d.\n",i,year);
}
printf("END OF OUTPUT.\n");
return 0;
}