var
m:array [1..10] of integer;
q,z,i,s:integer;

begin
read(q);
write(' ');
read(z);

readln(m[1]);
s:=m[1];

 for i:=2 to 10 do
 begin
 write(' ');
 read(m[i]);
 s:=s+m[i];
 end;

 s:=s*20;

 if z-s>=q then write('No chance.')
 else write('Dirty debug :(');
 end.