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

int main(void)
{
    float x,y;
    float size;
    int konec;
    
    do{
	scanf("%f %f",&x,&y);
	konec=getchar();
	if((x==0.0)&&(y==0.0)) return 0;
	size=(x*x+y*y);
	size=(size*M_PI/2.0)/50.0;
	if ((size-(int)size)!=0.0) size=size+1.0;
	printf("The property will be flooded in hour %d.\n",(int)size);
    }while(1);
    
    return 0;
}