BT1:
Uses crt;
var i,n: integer;
a: array[1..100] of longint;
begin clrscr;
readln(n);
for i:=1 to n do
read(a[i]); readln;
writeln(a[i]:3);
readln;
end.
BT2:
Uses crt;
var i,n,k: integer;
a: array[1..100] of longint;
begin clrscr;
readln(n);
for i:=1 to n do
read(a[i]); readln;
for i:=1 to n do begin
if(a[i] mod 2=0) then k:=k+a[i];
end;
writeln(k);
readln;
end.