Main.java:1: error: class, interface, or enum expected
var n, s: integer;
^
Main.java:2: error: class, interface, or enum expected
begin
^
Main.java:4: error: class, interface, or enum expected
s : = 0;
^
Main.java:5: error: class, interface, or enum expected
while s <= 512 do
^
Main.java:8: error: class, interface, or enum expected
n : = n + 4
^
Main.java:10: error: class, interface, or enum expected
write(n)
^
6 errors