var n,i,j,k:longint;
    r,ansr,x,y:real;
begin
  readln(n);
  for i:=1 to n do begin
    readln(x,y);
    ansr:=sqrt(sqr(x)+sqr(y));
    r:=0;k:=0;
    while r<ansr do begin
      inc(k);
      r:=sqrt((1.57*r*r+50)/1.57);
    end;
    writeln('Property ',i,': This property will begin eroding in year ',k,'.');
  end;
  writeln('END OF OUTPUT.');
end.