/in/Main.java:1: error: class, interface, or enum expected
var a,b:longint;
^
/in/Main.java:2: error: class, interface, or enum expected
begin
^
/in/Main.java:4: error: class, interface, or enum expected
    writeln(a+b);
    ^
/in/Main.java:5: error: class, interface, or enum expected
end.
^
4 errors