//Sample05_01.java
class Sample05_01{
    public static void main(String[] args){

      StringBuilder sb = new StringBuilder();
      sb.append("黄瀬涼太\n");
      sb.append("緑間真太郎\n");
      sb.append("青峰大輝\n");
      sb.append("紫原敦\n");
      sb.append("赤司征十郎\n");
      System.out.println(sb.toString());

      int num = sb.length();
      System.out.println("length: " + num);
    }
}