很久很久以前,阿拉伯数字王国的国王过20岁生日,罗马数字王国的国王派人送来了20棵珍贵的树,作为生日礼物。阿拉伯数字国王十分高兴,他命令大臣将这20棵树栽在宫廷花园里,每行要有4棵,还要使行数最多。这可是一个很难很难的问题啊。大臣张榜招贤,凡是能巧妙栽好这20棵树的人将有重赏。可是,谁也设计不出栽 Long, long ago, the king of the digital kingdom of Arabia passed the twentieth birthday, and the king of the Roman kingdom sent to send 20 precious trees as a birthday present. He was very pleased with the king of Arabic numerals, and he ordered the chancellor to plant the 20 trees in the court garden, each of which had four trees and the largest number of them. This is a difficult question Chancellor Zhang Zhangxian, who can cleverly planted these 20 trees will have rewarded. However, no one can not design planted