program gt;
var a:array[1..1000]of integer;
i,s,n:integer;
begin
read(n);
s:=0;
for i:=1 to n do
read(a[i]);
if(a[i] mod 5=0)then s:=s+a[i];
end;
writeln(s);
end.
program gt;
var a:array[1..1000]of integer;
i,s,n:integer;
begin
read(n);
s:=0;
for i:=1 to n do
begin
read(a[i]);
if(a[i] mod 5=0)then s:=s+a[i];
end;
writeln(s);
end.