原题链接http://projecteuler.net/problem=56

Powerful digit sum

A googol (10¹⁰⁰) is a massive number: one followed by one-hundred zeros; 100¹⁰⁰ is almost unimaginably large: one followed by two-hundred zeros. Despite their size, the sum of the digits in each number is only 1.

Considering natural numbers of the form, a^b, where a, b < 100, what is the maximum digital sum?

幂方数字和
古戈尔 (10¹⁰⁰)是一个天文数字：1后面跟着100个零；100¹⁰⁰更是不可想象的大:1后面跟着200个零。尽管它们非常大，但是它们的数字和为1.

求幂方a^b中，a,b < 100,最大的数字和
解法：
暴力吧。