program trunc123(input,output);
const pr=3.1415926535897932384626;
var
  i,j,k,n,m:longint;
  x,y,r:real;
begin
  readln(n);
  for i:=1 to n do
    begin
      readln(x,y);
      r:=x*x+y*y;
      r:=r*pr/2;
      m:=trunc(r/50)+1;
      writeln('Property ',i,': This property will begin eroding in year ',m,'.');
    end;
  writeln('ENG OF OUTPUT.');
end.