#include<iostream>
#include<cmath>

double vzd(double x,double y){
	return sqrt(x*x+y*y);
}
int main(){
	double x,y;
	while(1){
		cin>>x>>y;
		if(x==0 && y==0)
			break;
		//	cout<<"The property will be flooded in hour "<<(ceil(M_PI*vzd(x,y)*vzd(x,y)/100.0))<<".\n";
		//	cout<<"The property will be flooded in hour "<<((M_PI*vzd(x,y)*vzd(x,y)/100.0))<<".\n";
		cout<<"The property will be flooded in hour "<<int(ceil(M_PI*vzd(x,y)*vzd(x,y)/100.0))<<".\n";
	
	
	}


}