{

NAME Ammar Qadri

SCHOOL Woburn Collegiate Institute

DIVISION Senior

CONTEST One

}

uses crt;

var

aa,bb,n:longint;

a,b:char;

h,s:array[1..7] of real;

function v(x:char):longint;

begin

if x in ['1'..'9'] then exit(ord(x)-ord('0'));

if x in ['A'..'H'] then exit(ord(x)-ord('A')+10);

end;

function sum(a,b:longint):real;

var

aa:longint;

c:real;

begin

c:=0;

for aa:= a to b do c:=c+h[aa];

exit(c);

end;

begin

for aa:= 1 to 5 do begin

readln(n);

for bb:= 1 to 5 do s[bb]:=0;

for bb:= 1 to 7 do begin

readln(a);

readln(b);

h[bb]:=(v(b)-v(a))/2;

if h[bb] > 6 then s[5]:=s[5]+48+12*(h[bb]-6) else s[5]:=s[5]+8*h[bb];

end;

if sum(1,7) > 30 then s[1]:=300 + 15*(sum(1,7)-30) else s[1]:=10*sum(1,7);

if sum(1,7) > 40 then s[2]:=300 + 15*(sum(1,7)-40) else s[2]:=7.5*sum(1,7);

if sum(1,7) > 20 then s[3]:=185 + 10.5*(sum(1,7)-20) else s[3]:=9.25*sum(1,7);

s[4]:= 13.5*(h[1]+h[7]) + 6.75*sum(2,6);

writeln('$',s[n div 100]:0:2);

end;

readln;

end.