var n,a,i,s: integer;
begin
readln(n);
s:=0;
for i:=1 to n do
readln(a);
if a mod 15=0 then s:=s+a;
end;
writeln(s);
end.
var n,a,i,s: integer;
begin
readln(n);
s:=0;
for i:=1 to n do
begin
readln(a);
if a mod 15=0 then s:=s+a;
end;
writeln(s);
end.