
import java.util.stream.IntStream;

class main {
	public static void main(String[] args) {
		var a = 10;
		var c = 'f';
		System.out.println("hello world");
		IntStream.range(0, a).map((i) -> (i + 1)).forEach(System.out::println);
		System.out.println(c);
	}
}
