import static org.junit.jupiter.api.Assertions.*;
import org.junit.jupiter.api.Test;
import java.util.List;
import java.util.Arrays;
public class Main {
    //Program start

    //Program end

    @Test
public void test1() {
    assertEquals(Arrays.asList(1,3,2,5,8,3,7,7), separateDigits(Arrays.asList(13,25,83,77)));
}
@Test
public void test2() {
    assertEquals(Arrays.asList(7,1,3,9), separateDigits(Arrays.asList(7,1,3,9)));
}

}