#include <stdio.h>
#include <math.h>


int main(void){
        float num1=0;
	float num2=0;
	float r=100/M_PI;
	float w=0;
	float d=0;
	
	scanf("%f",&num1);  
	scanf("%f",&num2);  
	while(!((num1==0)&&(num2==0))){
	      d=(num1*num1)+(num2*num2);

              w=d/r;
	      printf("The property will be flooded in hour %.0f.\n",floor(w)+1); 

	      
	      scanf("%f",&num1);  
	      scanf("%f",&num2);  
	      
	      
	}
	return 0;	
}