一种机器数是这样的数字之和分.
例如,111是因为,数的数字之和为3,其中
分111.我们还可以指定在另一座B号,和一个数
基B是一个数如果奈文的数字之和将其价值.
给出B（2≤B≤10）和基B一个数,确定它是否是一个机器
数或不.
输入
你会得到一个测试用例的数量.输入的每一行包含了
基B,其次是一个字符串的数字表示在一个正整数
基地.没有前导零.输入由一行终止
0个人.
输出
对于每一种情况下,打印一行“是”如果给定的数是奈文数,
否则,“不”.
英语翻译A Niven number is a number such that the sum of its digi
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